Normal Form
This is rather one of the largest stages in the game, comprised of narrow passages, platforms and lots of hazards. The hot-red stone layers on the walls and ceilings can scorch any character that gets in contact with them. These “danger zones” can easily KO players with 100% damage above.
In the crystalline corner of the stage, in the lower right. There's a cart that will rush to the right. Anyone hit will get launched, and there's even a risk that they'll get combo'ed by hitting the spikes on the wall. There 's also another cart that spawns along the platform with a track to the lower right. It can be ridden and take players, capable of damaging and launching unfortunate players in its way. Be careful when riding it since it won't stop and will carry you offscreen.
You can enter the barrels and press the attack button to get launched on the direction it is pointing at. This is kinda risky since it's possible that you'll get launched offscreen instead if you got your timing wrong.
Omega Form
The battle takes place in single, small, round platform with no hazards or transitions.