In the style of the zombie game Left 4 Dead.
Your player character is a band of 4 or more players who have to fend off a horde of Pedobears. They all go down pretty easily, especially if you have the Christ Hansen character which allow you to beat them with a seat, or make them sit on it (a slow down
weapon). Or perhaps you want to play as the FBI?
If a pedobear does touch you, you don't die. Rather you get dragged off into the various holes around the map. Which would allow your friends to stage a rescue.
You can choose either the normal game, where you process though the map, or take the survival mode (where you are in a safe house that is getting stormed, and game over is when all player character gets dragged out of the safe house by the pedobears).
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Pedobears as zombies can get boring, why not add various of his other friends that are out there, that are not 'pedobears' but are just there to help out. (e.g. they bring guns, to defeat the FBIs and the Christ Hansens)