Managed to win, had fun, good game.
The theme, by intro pic, reminded me of "Hospoda na mýtince" by Jára Cimrman. I was therefore slightly disappointed that it was not the case. However the game itself had good polish, cool premise and worked without any issues.
Only issue I had was that the first prisoners are doomed to fail as you get the upgrades for your subsequent runs (shots) only. Maybe add a parachute for the first guy for reaching a milestone so that you can escape with the first guy if he is lucky?