Ummm.the Level 5 Crab is VERY easy to beat if you have a fully powered-up gun when you enter the room. You just stand in one spot and shoot. You don't even need to use grenades. You'll blast through all the bubbles, and get him little by little. It takes a while, but it beats bubble-dodging. Also, I find it easiest to beat the Plutonium Boss by just sitting in the lower-righthand corner and firing grenades. Usually, his whip can't even touch me.
Sethra Shnoo
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