Upgrade your turrets, upgrade AK, save for End-gun, upgrade that and all you have to do is keep you mousebutton pressed for a few minutes... not much of a challenge in this game. I never dropped under 50% HP once :(
I don't get why ppl find this 'inappropriate' this is basic stuff you learn in school (or at least you should unless you live in some backwards country with messed up ethics and moral) and has nothing to do with actual 'sex' or 'nudity' or 'profanity' this game is as clean as it gets, so suck it up and deal with it, if you thing this is too much, than ppl refrain from using the internet or coming outside because inappropriate stuff will kill you feeble brain!
 "Undead's Island"){kind=icon}
 "Planet Juicer"){kind=icon}
 "The Great Sperm Race"){kind=icon}