Easy final boss
Here's an easy but expensive way to kill the Mutant Protopet.First, to the spot where you can see the Mutant Protopet and your near the last vendor. Then unload all your medium to long range weapons on it when the Mutant Protopet is in range and when your out of ammo and reload and keep repeating until you think you have done enough damage to it and jump down.
More tricks, tips and cheats for this game are right here - Ratchet & Clank: Going Commando cheats
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