Ending? Possible Spoiler...

[Lyrical_Massacre]

What do you do after you shoot down the two helicopters and then shoot off al the panels of his lil teleporter devive....i always run out of time...

 

[bone4ahead]

you won.

 

[Intamin]

No no no, you have to shoot an energy ball with the grav gun into the huge core of energy, THEN you've won.

 

[slightlyretarded]

u gotta shoot like 50 balls in there it destroys more pannels are are circulating it

 

[RakuraiTenjin]

Don't worry about the choppers, just kill his teleportation ball thing. When it goes down, the choppers lose power and plummet.