Unlock the following skins by performing the corresponding tasks:

SKIN -  HOW TO UNLOCK
Battler - Jack 35 Battlers.
Bratgirl - Beat 130 Brat Girls.
Doom Monkey - Beat 500 Doom Monkeys.
EE-Lectric - Jack 50 EE-Lectrics.
Goar - Jack 30 Goars.
Halloween - Complete 50% of the game.
Koo-ala - Beat 150 Koo-Alas.
Magmadon - Jack 50 Magmadons.
Ratnician - Beat 200 Ratnicians.
Rhinoroller - Jack 30 Rhinorollers.
Scorporilla - Jack 15 Scorporillas.
Shellephant - Jack 15 Shellephants.
Sludge - Jack 50 Sludges.
Snipe - Jack 50 Snipes.
Spike - Jack 50 Spikes.
Stench - Jack 50 Stenches.
Valentine - Collect all Gold Idols.
Voodoo Bunnie - Beat 200 Voodoo Bunnies.