Here is the full list of all 29 Killing Floor: Incursion achievements.
Get 2000 points in Holdout
Completely dismember a Zed.
Beat Biotics in Co-op
Give the data to Foster
Revive your partner in co-op.
Beat Paris in Co-op
Dual-wield Zed limbs.
Beat Catacombs in Co-op
Blow yourself up with a grenade.
Beat Farmhouse in Co-op
Get 5 kills while in Zed Time
Get 5000 points in Holdout
Get 7000 points in Holdout
Get 10000 points in Holdout
Kill a boss in Holdout in 1 shot.
Kill a Scrake with only knives.
Kill a Fleshpound with only knives and pistols.
Kill a Husk with a thrown knife.
Kill a Zed at long range with a thrown knife.
Let's never talk about this again.
Beat a map with only melee attacks.
Beat a map with only guns.
Beat Farmhouse in Solo
Beat Catacombs in Solo
Beat Paris in Solo
Beat Biotics in Solo
Beat game on Hardcore (Hard mode)
Give the data to Emma/Patriarch
Get the "Do Nothing" Ending