Great game!
The controls took some getting used to. Seemed like there was a little too much momentum in everything that happened. Often, i would get killed not from the shot that hit me, but from it throwing me like a toy and slamming me into a wall. Also, your aiming went out the window when you get hit. It became darn near impossible to survive once they had automatic weapons and hit you first. Other than those twp gripes, the rest of the game was loads of fun.
I'm not sure why so many are having a hard time of this. It gives you a big clue right on the floor when you approach the giant robot. Also, it only says you have to bring an ally. It doesn't say anything about him being alive. =)