This game can be finished within 30 min
This game is like a nice group project of video game academy students. Gamespot says it's a 45min game, which actually can be finished within 30min. And I only saw two types of enemies. When you think the warm-up is just enough, the story ends. There is a hidden running energy gauge, which makes sprinting annoying because it's easy to get exhausted and mumbling. The quality of its comic cut-scene is bad. They should've spent more efforts to make it look better.
The Good
Free 15min trial on Onlive (and you should be able to finish half-way). The in-game graphic is good. I have a good impression to Saber 3D engine now. Voice acting is not too bad, but with a lot of background echo. There are only three weapons, rifle, rpg, sniper rifle, nevertheless, I think it's enough to have fun in a FPS game.
Conclusion
I wouldn't spend more than 1 dollar for this game. Free 15 min trial on Onlive is enough. Yet this game does have its potential to be a good game if the design team can finish it.