Here is the full list of all 15 Operation KREEP achievements.
Kill 1000 players!
Killed 5000 "KREEP-lings".
Kill 9 "KREEP-lings" with your exploding corpse.
Kill two players with one bomb!
Kill two players with your exploding corpse!
Kill the KREEP when "KREEP eats people" and "CHAOS KREEP" mutators are set! "No sudden death" is not allowed...
I used to think I was indecisive. Now, I'm not sure... Kill 10 players and 100 "KREEP-lings" in one match!
Kill yourself 100 times!
Kill two players with one rocket!
Kill 5 players with 5 shots!
Play a full match with all the mutators activated!
Try all mutators!
Play a match in which your shots never miss a "KREEP-ling" or a player.
Tutorial completed.
Died during the tutorial.