Solid submission. With more progression, and more enemy types, it would just get even better. Nice work!
Some notes - the game got waaaay easier once I found out the mouse aims the attacks. I agree that even a very inconspicuous compass-like pointer on the player character indicating attack orientation would be a huge help for a new player. On the boss - can it actually die? I'm 7 minutes in and I've been swiping at it for some time, now. I'm assuming just getting to the boss constitutes the win? It's good you managed to get a second enemy type in the game in addition to the boss, and it's also cool the boss actually has a special attack. The parallax effect with the building background is nice - actually the sprites in general are well-done, the player character looks good - as I was running around in circles swiping, for some reason I took a special liking to the way the boundary buildings are presented. The ground also looks like something bad happened here...