Main game
2.58 average rating based on 52 ratings
So this is what happened with me:
Started the game from Steam. -> Game started in a window, text too tiny to read. -> Tried to make the game fullscreen with Alt+Enter; didn't work. -> Restarted and fiddled with the options to make full screen work. -> "Okay, time to see what this is." -> Launched tutorial mission. -> Distracted by the horrible movement mechanics and imprecise controls. -> Somehow figure out moving around with the jet-pack. -> Formed a squad of 3 robots and went to a fight. -> Destroyed in seconds before I could even see the enemies. -> Restarted the level at a lower difficulty. -> Nope.
All of that happened in 30 minutes, and none of it was good. I had encountered usability problems, bad mechanics and possibly a steep learning curve. One of those could have been acceptable, perhaps, but not all of them at once.
P.S.: There are lots of reviews on Steam of folks appreciating the free-form style of this game. This review is simply my own opinion, and I prefer to have a little more structure in my games.