If you jump on top of the console to the left of the objective there as the rocket trooper, crouch and jet backwards you can go through the wall there into the upside down. There are places you can then fire at people in that ice tunnel. Not that I do that much or at all even.
If you jump on top of the console to the left of the objective there as the rocket trooper, crouch and jet backwards you can go through the wall there into the upside down. There are places you can then fire at people in that ice tunnel. Not that I do that much or at all even.