Facing Your Fears

These are a type of special enemy found as you progress through the Shattered Space DLC. You'll see they are bigger and tougher than the regular sparkly dudes. Killing 25 should come naturally through the DLC without any special effort.

If you want to encourage more to spawn, don't kill human enemies too quick as they may summon a vortex horror. Also craft and use the Vortex Lure grenades - when you use them small Horrorlings will spawn, which also count.