4 near the Flak Cannon, 2x3 near the Lightning Gun, 4 below Bio Rifle
Strategy
The Super Shield room might as well be called "the Death Trap", since the only entrance/exit is that which takes the player to the Link Gun area. Use it to your advantage by blasting a Shock combo in your opponent's face. Next step, if the super shield wasn't taken, catch it before (s)he can spot you. If you're on the receiving end, tey to get the Shield and get out of there before your opponent can spot you. Otherwise, be prepared to fight fire with fire.
You can use a shortcut in the UDamage room from the second floor to the third one, this is, from the Adrenaline area to the Minigun area. There's a ramp which will help you to do this.
Use Speed to liftjump-jump from the Link Gun elevator to the Lightning Gun area.
Single-player tips
Take advantage of the bot's low speed (they don't jump/dodgejump much) to trap them in the Super Shield area.
