staying alive badge is tuff!
use ur full power punch to take out the 4-5 guys. restart if u get close to dying.
for the next 10 guys. just make sure you get all the dangerous power ups... like the ray gun, shotgun and mines. keep moving around taking all the power ups until you get your hands on a sniper or shot gun or magic or net before you engage him.
use the Z+X to evade his attacks.
i used poison dart a few times to weaken them. pitch fork is good too. pick them up and drop them off the side. booby trap boxes and mines work are quick and risky.