Followed directions correctly. 1hit kill works on the stage you activate it on only, after that it only works on crit damage, normal damage is 1dmg per hit. Enemies also sometimes recieve partial negative damage dependent on the damage you deal, so sometimes they gain so much extra health that it takes multiple crit hits to kill them. It literally makes the game take longer than it would without the 1hit. Also no ads does not work, yes i know it is supposed to just be for the 5-15second ads between stages, but it does not work. All ads still appear.