The controls are unique and take some getting used to, but definitely a keeper so far. I killed a couple of foreign player in multi-player (its only available oversees until tomorrow).
Definitely precision is needed. The one twist is that you have to keep your suits energy level up or you die. You do this by finding heat sourced in dead aliens or scattered around the terrain.
Lots of usable vehicles to be found, as well as a Halo 2 esque quantity of weapons.
All in all, I like it so far and it appears to be a good quality game. More later.
Z