A fine first submission! Interesting choice on making the player move in a discrete way instead of continuous, cannot say I've ever seen that before. Makes movement feel unique, I like it.
Your bullets getting blocked by the enemies' bullets added a little bit of a cumbersomeness to the battles if the fire rate of both you and the enemy is the same. But overall this makes it so that you have to be a bit more skilled in strafing to make sure that you can dodge the enemies. Like I said, nice submission, congratulations on your first jam!