I played this game on my ipad in the 2010s. It had this cartoon-y art style where the heroes you could unlock and play as were simplistic and had black dot eyes. Whole game had a pretty bawdy sense of humor.. definitely some toilet jokes (I especially remember an outhouse being an important macguffin for some later levels). There was a forested early game world, and a desert and ice world later on. The paid currency you could buy in the shop and use on skins was called "chips." I'm sure of this.
I also remember a guard posted outside of the level select area who had pinkish skin and would say random things like "y'know, people tell me I look like Bruce Willis"
Seem to remember there was a character with two butcher knives?
This has been driving me crazy for actual years so any help would be greatly appreciated..