TigerCake is going to be some form of abstract styled first person shooter. May include some humor, so things aren't too serious.
It's the better machinegun. Fires two times faster. Maybe it will always fire 4 shots, and maybe every 20 shots it will need 1 Cell. It could be fired without the Cell, but it gets slower.
I was thinking some other weapons need 2 ammo types too. All this sort of weapons can be fired without having any of the secondary ammo type, but they will be less effective in some way: firerate, damage, projectile speed.
The other arm is holding the weapon, not connected to the body. Somehow it can do that.
If I make the thing that you can have 2 weapons at the same time, then the other arm probably doesn't float like that, except melee attacks make the arms fly around a bit.
Also, the Claw got a health leech ability, so it may get some more use even when you have the Sword.