lasers.

Maybe chain weapons or Funny goofy ones like you hold a mini trex (bow re-skin) and the arrow is a little roar

Maybe even shields

I think that weapons that were on the hands, like brass knuckles, would be cool.

You technically already created a grenade...

Guns like maybe shotguns that you have to manually reload, or maybe stun guns.

Maybe cannons in the walls? So that would make you get a projectile weapon like a bow or a gun.

Maybe a Spear that has longer reach but no horizontal attack.

A Battle Axe that swings slower but hits harder and unbalances enemies when they block.

A Boomerang type weapon that can be thrown at short range but leaves you defenceless until it comes back