Thanks for playing my game! The recoil shot was my favorite mechanic to test out in the map editor. As for switching directions to gain speed, I was not expecting someone to find out about it so fast, glad you enjoyed it. I do agree that sound effects for hitting enemies would have been great, but I was putting in the sounds really close towards the deadline.
The regular bullet actually does more damage than the recoil shot. My thought process was that the recoil shot would be used mainly for movement/evasion rather than damage and the player wouldn't be forced to push themselves back when trying to deal more damage. I can see why it is confusing for a bigger bullet to do less damage though.