On a related note, are their rules for destroying the ground? I know Adamantine weapons can ruin dungeons when all the walls get destroyed, but what about the ground beneath your own feet? There might already be something like this, but I thought this sort of thing up;
Crumbling (+3(?) Weapon Enhancement)
You may make a melee attack against a square within your melee reach. If you succeed, you make a strength check. This is added to your to hit result. For every x amount of points you beat the hardness of the square, you break another square of terrain below the targeted square.
I would probably make it ripple outwards in a sort of inverted pyramid shaped crater. What do you all think?
Also, I'm wondering, if you combined pun-pun with the HulkingWarHulker Build, could you throw the planet?