The Lab Rat
Attack the helicopter before it reaches Belamy. For the bonus objective, you have to use Black Hole to attack the helicopter. Scale the walls, jump then target the helicopter before holding the attack button and release your black hole. Keep doing this until the chopper is destroyed.
Next, you'll have to intercept the APCs before they reach the Airbridge. This is a bit easier. Just spam using Tendrils to destroy the APCs. Once the target is out, smack him down and consume him. Escape the alert afterward.