Soldier's Syringe

The Soldier's Syringe is a returning item in Risk of Rain 2.

Soldier's Syringe decreases the intervals between individual primary attacks and increases the animation speed of all skills by a factor of 1.15.

It should be noted that this only increases the animation speed and doesn't affect the cooldowns of those skills. Most primary skills of Survivors have no cooldown, the exception being Artificer, meaning that all other survivors get an almost direct 15% attack speed buff per syringe on their primary skill. This does not mean that Syringes are useless on Artificer, though; A higher attack speed will shorten the charge time for her Charged Nano-Bombs. If combined with multiple Backup Magazines, this can cause her damage potential to increase significantly.

There is a bug with Acrid and Mercenary with sources of increased attack speed; At certain attack speed ranges, their melee attack animations may break, causing them to only perform the first swing in the chain. This can be fixed by bringing the attack speed outside of these bugged ranges.