This game has some interesting functions in it, being it's respawn method, running, and jetpacks are always fun to add in without them being too advantagous, just enough to add a little more movement. However, the AI's on Single player are complete idiots, either running around, or having been scripted to stand around in the back lines, not assisting in any way shape or form while you're made to rush into the front lines over and over again. An ammo drop feature on enemies would be nice to have, since if you're good, you'll find yourself running out of ammo repeatedly, where either you'll have to find a resupply point if the enemy AI hadn't destroyed it yet, or off yourself to refill your ammo. Oh, and you cannot customize your loadout by clicking escape/pause/anything while dead, just get respawned, which I find to be silly. If there's no resupply point, then you're STUCK with your loadout.
I haven't played the Multiplayer yet, since it's forcibly built into Windows Live, which I utterly refuse to use. I can bet it must be plenty of fun, if there's a stable playerbase to it with enough rooms.
If this game is to go on sale for a cheap price, then yeah, I suggest you go try it out and see how you like it as long as you enjoy the scifi-fps type games. I just wish they'd not script the AI's to stand around like idiots while I get my ♥♥♥ shot off, and allow pause screen loadout customization. Other than that, it's fairly enjoybale!