Nice little game! Greatly polished, haven't seen what I can really break. Combination of a speedrun timer, movement responsiveness, and camera speed made me want to really fast which didn't combine well with how the game was structured. Using mostly dash to not lose that sense of speed I haven't really touched other mechanics. Going slower the second time gameplay had more thought put in it and was not as dizzying. Shotgun is a bit strange, small attack area and it sends you really far in an opposite direction which usually ends in getting hurt by enemies.
Good job! Keep making games and improving!