Cool short game i got on sale made by two guys, it plays well, might feel weird at first but once you get accostumed, it plays really nice. Levels are well designed, limited arsenal and enemy roster when compared to other games, but if you play this once every 4 months, these dont get old and the campaign will not take that long to beat. it took me 9 hours (+4h i spent doing something else).
The game doesn't feel unfinished or unpolished, but further updates to give the game some NG+ and extra content would be cool while the second is being made. An an extra mode too or change how the weapon upgrade system works.