While Killing Floor: Calamity does not have achievements in the currently released Ouya version, at one point there were achievements listed in Steam's database for a potential release that never came out.

In addition to achievements, there are also Medals you can earn on each map.

Icons Name Description
Level up! Get to level 2 with any perk.
Climbing the Ladder Get to level 5 with any perk.
Getting There Get to level 10 with any perk.
High Achiever Get to level 15 with any perk.
Working To Hard Get to level 20 with any perk.
Ninja Looter Unlock a weapon.
Experimenticenticide Kill 100 Specimens.
Experimentimillicide Kill 1000 Specimens.
Survivalist Survive all waves on any difficulty/length.