The last time I played this game was around a year ago when it was still a work in progress and available for free. I was just mentioning that I remembered it being free. Recently, I revisited the game to see how it has been progressing.
I think the game is way too punishing for day 1. I used as little ammo as possible in the first fight. For the 2nd fight on the easiest difficulty, it was way harder and basically impossible to beat on the easiest difficulty. (+2 rep)