Acrid (Unlisted Miniboss)

Acrid can be found in the top-right area of the Sunken Tombs (or rarely the Ancient Valley) level in a cage. After activating the crate, it will open, releasing a NPC-controlled, hostile Acrid. He has a good amount of health, but is easy to kill with drones. Once defeated, the playable character Acrid will be unlocked.

Acrid will only spawn in one of the three layouts of the area.