Engineer: Zero Sum

Engineer: Zero Sum is a challenge in Risk of Rain 2. It is completed as EngineerEngineerThe Engineer is a unique class that requires planning and positioning to be successful.
Class: Ranged
HP: 130 (+39 per level)
Damage: 14 (+2.8 per level)
Armor: 0
Umbra: Fortification Expert by finishing charging the Teleporter with zero Monsters remaining on the stage.

Tips[]

The easy method is to charge the Teleporter to 99% without killing the Teleporter Boss, at which point no more monsters will naturally spawn. Kill the remaining monsters then kill the Teleporter Boss to complete the challenge.

Can be done on Prismatic Trials.

Version History[]

Early Access Artifacts Content Update

Major Content
- Added New Engineer Challenge: Zero Sum

Risk of Rain 2 Wiki
Main
Artifacts • Challenges • Chests • Difficulty • Drones • Equipment • Interactables • Items • Item Stacking • Lore • Mechanics • Monsters • Newt Altars • Prismatic Trial • Shrines • Status Effects
Survivors
AcridAcridAcrid is a melee-range hybrid who uses powerful poisons to melt tanky enemies. Class: Melee / Ranged HP: 160 (+48 per level) Damage: 15 (+3 per level) Armor: 20 Umbra: Test Subject • ArtificerArtificerThe Artificer is a high burst damage survivor who excels in fighting large groups and bosses alike. Class: Ranged HP: 110 (+33 per level) Damage: 12 (+2.4 per level) Armor: 0 Umbra: Herald of the House Beyond • BanditBanditThe Bandit is a high-skill combo character that can dish out devastating backstabs while weaving in and out of stealth. Class: Ranged HP: 110 (+33 per level) Damage: 12 (+2.4 per level) Armor: 0 Umbra: Desperate Outlaw • Seekers of the Storm - DLC Content CHEF is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run. Click for more info. CHEFSeekers of the Storm - DLC Content This content is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run. Click for more info.CHEFA survivor of high class, CHEF specializes in only the most exquisite meals and combos. As a culinary master, CHEF uses a variety of practiced skills in tandem for additional benefits. Class: Ranged HP: 110 (+33 per level) Damage: 12 (+2.4 per level) Armor: 0 Umbra: Culinarian Adept • CaptainCaptainThe Captain is a unique survivor that can control the battlefield with utility and damage - with help from the UES Safe Travels. Class: Ranged HP: 110 (+33 per level) Damage: 12 (+2.4 per level) Armor: 0 Umbra: Tired Veteran • CommandoCommandoThe Commando is a jack-of-all-trades character that is reliable in all situations of the game. Class: Ranged HP: 110 (+33 per level) Damage: 12 (+2.4 per level) Armor: 0 Umbra: Cornered Gunslinger • EngineerEngineerThe Engineer is a unique class that requires planning and positioning to be successful. Class: Ranged HP: 130 (+39 per level) Damage: 14 (+2.8 per level) Armor: 0 Umbra: Fortification Expert • Seekers of the Storm - DLC Content False Son is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run. Click for more info. False SonSeekers of the Storm - DLC Content This content is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run. Click for more info.False SonThe False Son is a slow but stalwart close-range warrior. With extreme health and defense, False Son can weather any storm. Use False Son's durability to stay in the fray and capitalize on his slow but deadly skills. Class: Melee HP: 180 (+54 per level) Damage: 13 (+2 per level) Armor: 20 Umbra: The Shattered Heir • HereticHereticThe Heretic is a powerful character who can only be accessed through extraordinary means. Class: Ranged HP: 440 (+132 per level) Damage: 18 (+3.6 per level) Armor: 0 Umbra: Unorthodoxy Risen • HuntressHuntressThe Huntress is an extremely mobile but fragile survivor with a high damage output. Class: Ranged HP: 90 (+27 per level) Damage: 12 (+2.4 per level) Armor: 0 Umbra: Judge, Jury, Executioner • LoaderLoaderThe Loader is a slow but powerful bruiser that can use her grappling hook to uniquely navigate the environment. Class: Melee HP: 160 (+48 per level) Damage: 12 (+2.4 per level) Armor: 20 Umbra: Bionic Powerhouse • MUL-TMUL-TMUL-T is an aggressive survivor who has the tools necessary for any job! Class: Melee / Ranged HP: 200 (+60 per level) Damage: 11 (+2.2 per level) Armor: 12 Umbra: Right Tool for the Wrong Job • MercenaryMercenaryThe Mercenary is a high skill melee survivor that uses his many dodges to weave in and out of combat. Class: Melee HP: 110 (+33 per level) Damage: 12 (+2.4 per level) Armor: 20 Umbra: Hired Blade • REXREXREX is a half robot / half plant that uses HP to cast devastating skills from a distance. The plant nor the robot could survive this planet alone – but thankfully they have each other. Class: Ranged HP: 130 (+39 per level) Damage: 12 (+2.4 per level) Armor: 20 Umbra: Symbiotes • Survivors of the Void - DLC Content Railgunner is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info. RailgunnerSurvivors of the Void - DLC Content This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.RailgunnerThe Railgunner is a long-range, single target survivor that can instantly kill any high priority target - and from any range. Class: Ranged HP: 110 (+33 per level) Damage: 12 (+2.4 per level) Armor: 0 Umbra: Forgotten Nomad • Seekers of the Storm - DLC Content Seeker is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run. Click for more info. SeekerSeekers of the Storm - DLC Content This content is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run. Click for more info.SeekerAs a meditative mid-range brawler, Seeker utilizes powerful healing to sustain herself and her team. Class: Melee / Ranged HP: 115 (+34 per level) Damage: 12 (+2.4 per level) Armor: 20 Umbra: Diviner of House Beyond • Survivors of the Void - DLC Content Void Fiend is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info. Void FiendSurvivors of the Void - DLC Content This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Void FiendThe Void Fiend is a corrupted survivor that fluctuates between a controlled and corrupted form, each with different strengths and weaknesses. Managing this curse has become its fate. Class: Ranged HP: 110 (+33 per level) Damage: 12 (+2.4 per level) Armor: 0 Umbra: Corrupted Amnesiac
Environments
Abandoned AqueductAbandoned Aqueduct (Stage 2) Origin of Tar You dream of sand beneath your feet. Massive skeletons and pools of tar are littered around, and a towering aqueduct pouring down tar dominates the area. • Abyssal DepthsAbyssal Depths (Stage 4) Tectonic Relics You dream of fire. A hellfire-forged zone of blazing heat, the Abyssal Depths are believed to be a continuation and adaptation of the Magma Barracks from Risk of Rain. • Survivors of the Void - DLC Content Aphelian Sanctuary is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info. Aphelian SanctuarySurvivors of the Void - DLC Content This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Aphelian Sanctuary (Stage 2) Cleansing Center You dream of clarity. • CommencementCommencement (Final) Moon of Petrichor V You dream of glass and dirt. Large domain located above the shattered breach of Petrichor V's moon. It is made up of the shattered remains of four individual sections, emblematic of MithrixMithrix King of NothingHP: 1000 (+300 per level) Damage: 16 (+3.2 per level) Class: Melee / Ranged Speed: 15 m/s Armor: 20 and Providence's tools of creation. • Distant RoostDistant Roost (Stage 1) Ground Zero You dream of waves, crashing on cliffsides. Spires of earth jut through the fog and unknown avian creatures circle far peaks guarding their broods. • Seekers of the Storm - DLC Content Disturbed Impact is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run. Click for more info. Disturbed ImpactSeekers of the Storm - DLC Content This content is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Disturbed Impact (Stage 1) Meter of the Restless You dream of stabbing shards. • Seekers of the Storm - DLC Content Golden Dieback is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run. Click for more info. Golden DiebackSeekers of the Storm - DLC Content This content is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Golden Dieback (Stage 3) March of the Fallen You dream of golden leaves. • Seekers of the Storm - DLC Content Helminth Hatchery is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run. Click for more info. Helminth HatcherySeekers of the Storm - DLC Content This content is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Helminth Hatchery (Stage 5) Shadow of the Savior You dream of wurms. • Seekers of the Storm - DLC Content Prime Meridian is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run. Click for more info. Prime MeridianSeekers of the Storm - DLC Content This content is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Prime Meridian (Stage 4) Relic of the False Son - - • Rallypoint DeltaRallypoint Delta (Stage 3) 'Contact Light' Survivor Camp You dream of quiet snowfall. Rallypoint Delta is the remains of a makeshift camp constructed by a group of scattered crew members from the UES Contact Light, somewhere in the frigid tundra of Petrichor V. • Seekers of the Storm - DLC Content Reformed Altar is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run. Click for more info. Reformed AltarSeekers of the Storm - DLC Content This content is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Reformed Altar (Stage 2) Shadow of the Savior You dream of refuge. • Scorched AcresScorched Acres (Stage 3) Wisp Installation You dream of wind, blowing through trees. Large, circular platforms make up the majority of the stage, and embers float through the air. • Seekers of the Storm - DLC Content Shattered Abodes is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run. Click for more info. Shattered AbodesSeekers of the Storm - DLC Content This content is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Shattered Abodes (Stage 1) Ground Zero You dream of lost poetry. • Survivors of the Void - DLC Content Siphoned Forest is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info. Siphoned ForestSurvivors of the Void - DLC Content This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Siphoned Forest (Stage 1) Ground Zero You dream of fire and ice. The map is blanketed in a layer of snow, with large trees surrounded by platforms spanning multiple levels. • Siren's CallSiren's Call (Stage 4) Ship Graveyard You dream of wind. • Sky MeadowSky Meadow (Stage 5) Sprite Fields You dream of serenity. • Survivors of the Void - DLC Content Sulfur Pools is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info. Sulfur PoolsSurvivors of the Void - DLC Content This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Sulfur Pools (Stage 3) Pungent Spring You dream of brimstone. Tiered lakes of shallow sulfur pools. Arcing bridges and underground caves connect the map together. • Sundered GroveSundered Grove (Stage 4) Dormant Locus You dream of violent growth. Ancient flora has risen up to reclaim this once sacred refuge. Mazes of roots and overgrown fungus have twisted the landscape, leaving only ruins. • Titanic PlainsTitanic Plains (Stage 1) Ground Zero You dream of rolling hills. Gigantic stone arches bracket the skyline, while the main play-field overlooks a vast fractured tectonic lowland. • Seekers of the Storm - DLC Content Treeborn Colony is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run. Click for more info. Treeborn ColonySeekers of the Storm - DLC Content This content is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Treeborn Colony (Stage 3) Path of the Protector You dream of vines, cutting through the sky. • Verdant FallsVerdant Falls (Stage 1) Ground Zero You dream of sweet fruits, and bitter promises. Gigantic plants with vines and roots. Water running down their massive leaves fills the ground with pools of water. • Seekers of the Storm - DLC Content Viscous Falls is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run. Click for more info. Viscous FallsSeekers of the Storm - DLC Content This content is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Viscous Falls (Stage 1) Ground Zero You dream of falls, erupting from the flora. Gigantic plants with vines and roots. Water running down their massive leaves fills the ground with pools of water. • Wetland AspectWetland Aspect (Stage 2) Rehabilitation Zone You dream of twisting roots. Full of ruined stone structures and swampy areas filled with water.
Hidden Realms
A Moment, FracturedA Moment, Fractured (Hidden Realm) Hidden Realm: A Moment, Fractured Multiple floating islands in a void, with sharp blue crystals embedded in them. The Obelisk can be found on top of the last island. • A Moment, WholeA Moment, Whole (Hidden Realm) Hidden Realm: A Moment, Whole A bleak and desolate realm. The refuge of the Twisted Scavengers, safe from Mithrix'sMithrix King of NothingHP: 1000 (+300 per level) Damage: 16 (+3.2 per level) Class: Melee / Ranged Speed: 15 m/s Armor: 20 vengeance and destruction. • Bazaar Between TimeBazaar Between Time (Hidden Realm) Hidden Realm: Bazaar Between Time This stage serves as the shop in Risk of Rain 2. Players can purchase various Items with Lunar Coins or exchange items for higher-rarity ones in two crucibles. • Bulwark's AmbryBulwark's Ambry (Hidden Realm) Hidden Realm: Bulwark's Ambry The area consists of block-shaped platforms, with the Artifact Reliquary in the center. • Gilded CoastGilded Coast (Hidden Realm) Hidden Realm: Gilded Coast You dream of wealth. This area is where the player fights the boss Aurelionite, the Titanic Goldweaver. • Survivors of the Void - DLC Content The Planetarium is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info. The PlanetariumSurvivors of the Void - DLC Content This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.The Planetarium (Final) Cell V The Planetarium is an area somewhere within the Void, housing a collection of planets detained by the Void's denizens. It is inhabited primarily by the Voidling, the guard of the Planetarium or potentially the controller of the Void itself. • Void FieldsVoid Fields (Hidden Realm) Cosmic Prison Hidden Realm accessible only through the Bazaar Between Time. Until the cell is stabilized, the Void Fields will constantly "suffocate" the player for a small percentage of their current health. • Survivors of the Void - DLC Content Void Locus is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info. Void LocusSurvivors of the Void - DLC Content This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Void Locus (Hidden Realm) Cell IIIVIIIIIILVIIIVLVILIVLLLVVVILIVLI You dream of potential. The Void Locus contains many Void Potentials and Cradles in place of chests, and is inhabited by Void monsters.
Expansions
Survivors of the Void - DLC Content This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Survivors of the Void • Seekers of the Storm - DLC Content This content is part of the Seekers of the Storm DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Seekers of the Storm
Alternate Game Modes
Eclipse • Prismatic Trials • Survivors of the Void - DLC Content This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Simulacrum
Mechanics
Armor • Damage • Directors • Enemy AI • Family Events • Gold • Health • Item Stacking • Lunar Coins • Movement Speed • Proc Coefficient • Survivors of the Void - DLC Content This content is part of the Survivors of the Void DLC. It is only available if the DLC is enabled when starting a run. Click for more info.Void Fog
Other
Developer Console • Development Team • Languages • Modding • Soundtrack • Unreleased Items • Version History