Metal Warriors

Hint: More damage:
Press A when close to an opponent.

Level hints:

Level 1
Locate the area where your character goes down and finds a wall constructed of large round objects. Use a missile to blast through the wall and find a spider mech.

Level 2
Use small missiles to blast through the large missiles to find a new gun at one point in the level.

Level 3
Fly up and left from the start of the level to find a wall.
Blast through it to find a better gun.

Special head-to-head mode:
Successfully complete the game, then return to the main menu. A ?????? option will be unlocked. This is a special head-to-head mode, where player one is in a Nitro, but is shaped like a basketball player. Player two is a Ballistic, but shaped like a basketball, with what appears to be a programmer's head inside. These two armors work exactly like they do normally, but with different graphics. The battle takes place in a strange battlefield where the gas tanks have been replaced with a fat sumo wrestler, the little destroyable blocks are milk bottles, and various other weird things. Note: You may need to kill the Axis Leader before reaching the shaft with the Nitro to unlock this mode.

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.