New Weapons (My Suggestions):

-Earthquake
> ground shakes and Hedgehogs roll/slip

-Meteor Shower
> meteors fall from the sky and destroy random spots

-Turbo Shoes
> Hedgehog moves and jumps faster than usual

-Laser Gun
> shoots beams (? times) that create small flames

-Explosive Barrel (no weapon)
> barrel which explodes immediately

-Cluster Bomb 2 (Don't know how to name it)
> works almost like the normal cluster bomb, but the difference is that you can manually decide when it explodes

You should play the free flash version of "ShellShock Live 2".
I think there are some weapons that could fit to Hedgewars.

Keep up the good work