Metal Warriors (SNES)

More damage:
Press A when close to an opponent.

Secret platform:
When in the Ice stage in two player mode, use the Spider and get the upside-down item. Go to the far end and go to the lift. Move back a bit and use the upside-down item to reach the highest point of the level. You should see a few dots. Land on top of it and you will be standing on them. This will not work with any more warriors.