Voidling

 is an alternate final boss of Risk of Rain 2. it is encountered after reaching through one of two means.

Boss Encounter
This boss has three phases, largely similar to one another, with the Voidling having three starting attacks and gaining one extra attack per phase.

Phase 1
The Voidling will first appear once the player makes their way from the starting platform to the center ring of the Planetarium, attacking from the far side of the ring.

Homing Attack
Similar to the own attack, but firing large volleys in many directions at any range. This can be very difficult to dodge as hiding behind cover alone isn't enough.

Laser Burst
The Voidling fires a burst of multiple damaging lasers directly at its target, with the final shot creating a damaging area on the ground where it lands. This attack must either be taken cover from, or circled around faster than the Voidling can track.

Sweeping Beam
The Voidling lowers itself down and charges up a very thick beam horizontally before rotating two full times. As it rotates it aims progressively downwards. This attack pierces through all terrain which means the player will have to use their mobility to dodge it rather than relying on cover.

Phase 2
The Voidling retreats into a void rift, and the Planetarium will fill with damaging void fog. The player has to follow the Voidling through the void rift, which will lead to a small platforming challenge through the void that ends at another void rift, where they can find the Voidling in another arena for the second phase. The void fog will constantly damage the player until they reach the second arena.

Nullifier Black Hole
The Voidling initially rears up to nearly its full height before opening up its entire body, revealing a nullifier implosion sphere similar to a own death implosion. However this attack is far larger, far slower to build up, and most deadly of all, it pulls in all of its enemies towards it with considerable force similar to a black hole, requiring either high speed and mobility to escape or use of the terrain to block being sucked inwards. Like the Void Reaver's attack, being inside the radius when it implodes is instantly fatal.

Phase 3
The Voidling again retreats into a void rift, and same as before, the Planetarium will fill with void fog and the player has to chase after the boss through another platforming challenge.

Void Fog
For the final phase, the Voidling will not clear the void fog in the arena, and instead constantly projects a bubble around itself, similar to the holdout zones in the or, where anything outside of this bubble takes constant suffocation damage. In the case of being active, Survivors must be inside the radius of both Voidlings' bubbles in order to avoid damage.

Captured Monsters
Throughout the final phase the Voidling will be supported by small monsters that have been captured in the Void, such as.

Aftermath
After the Voidling is defeated, the Planetarium's air becomes safe again and a large purple portal will appear. Entering the portal ends the game with a "Fate Unknown" screen similar to, albeit with a purple icon instead of a blue one.

Tips

 * Bringing lots of mobility items such as and  is essential as it will make both dodging the Voidling's attacks and chasing it through the platforming challenges easier.

Version History

 * Survivors of the Void
 * (Undocumented) Added New Monster: Voidling

Trivia

 * There is a unique ending associated with defeating the boss in the game's files, but it is currently unused.
 * In keeping with the deep-sea theme of the Void and the monsters related to it, the Voidling's visual design seems to draw inspiration from ocean life, especially crustaceans. The Voidling in particular bears striking resemblance to the Japanese spider crab (Macrocheira kaempferi).