Definitely a good game but with some flaws like the weak story and aiming into the background wonkiness. But VERY well worth $15.
I'm excited to see what Chair does now that they have this basis though. They could do so much more with it and I'd happily buy it up. Give me a new setting, new powerups, maybe co-op or a deathmatch mode... so many possibilities. I do wonder if they'll realize they could spend more dev time on the next one and just sell it retail and probably still sell a ton of copies though. Though since used copies will get passed around so much for a single player game maybe digital only is the way to go on this one, even at a low price.
You guys should try for the Insurgent master challenge if you haven't (beat the game with only the flashlight, climbing gear, grenades, foam, and rocket). The tricks you have to do in order to get it are very interesting and puzzling to figure out.