While playing I've imagined the main character as a DEBT COLLECTOR, getting his sweet money back ^^
I've enjoyed playing this game, and it has great soundtrack.
I found the firsts level a bit hard as the enemies deal a lot of damage, then the weapons becomes so powerful that the enemies are a no longer a problem.
Only the movements are a bit "buggy", I have the impression that the main character use a capsule shape for it's collisions which make it very "slippery" around edges, also the character can stick to wall (that's a common things when using straight up a physics model and applying forces based on inputs).
Well done!