K.I.S.S.

K.I.S.S. is a acronym of Carlin army's main tactic: Keep It Simple, Stupid

It is explained by Bunny Bonecrusher:

Player: tactics Bunny Bonecrusher: Our tactic is to kiss.

Player: kiss Bunny Bonecrusher: K.I.S.S.! Keep It Simple, Stupid! Complicated tactics are to easy to be crushed by a twist of fate.