My Enemy gave me a stamp: i had a hockey stick which hits trowable objects back at people and my enemy throu a football at me and it killed him and i got the hyper destructive bouncing stamp LOL
Great tip on how to get skins: try to get all of the skins on the left first, because you know how to get them, and after you have them, you might have a few ???? skins aswell.To find out how to get some ???? skins, Read 19Noodles19 comment above or check out the walkthrough!
 "Flaming Zombooka 2")
 "Fat Slice")
 "Doodle Devil"){kind=icon}
 "Great Dungeon in the Sky")
 "Particle Lab")
 "Deadly Neighbours")
 "Bob the button two!")
 "Dummy Never Fails: Community")
 "Reincarnation: Let The Evil Times Roll")
 "Haunt the House")
 "Amorphous+")
 "Epic Combo!")
 "You are a... The Sequel")
 "Ball Drop One")
 "Everybody Edits")
 "Bloons Tower Defense 4")
 "Anti-Idle: The Game"){kind=logo}
 "Chaos Faction 2")