Near the start of Act 3, the player will receive the Rocket Shoes/Hyper Heli-Tails power-up and travel down a long corridor. Whilst traveling down the corridor, Metal Sonic will appear behind the player to ambush them, knocking them to the ground.
Upon landing, the battle will begin. Metal Sonic has a rather basic attack pattern; he flies from either end of the screen, diving towards the player in an effort to attack. This moment is when the player has a chance to attack him.
After Metal Sonic has been hit four times, he uses the V. Maximum Overdrive Attack to dash across the bottom of the screen and temporarily become invulnerable as he attacks, repeating the process after dashing six times. Once Metal Sonic has been hit twelve times, he suffers critical damage and slowly flies off in retreat, allowing the player to progress to the last bosses of the game.