I really like that the health indicator is shown through the feathers on top of the chicken’s head—it’s a creative touch!
That said, there are a few things that feel frustrating. Bots can shoot through walls, and there doesn’t seem to be a cooldown for player's shots, which makes combat feel overwhelming(in bad way). Enemies can also shoot from offscreen, which can be hard to react to. The arrow key controls don’t necessarily make movement easier since you can also jump with the Up arrow, which feels a bit unintuitive. You could make A W D movement keys, and SPACE to shoot will be much more easier to play. Additionally, in the last stage, enemies fire shots while falling (respawning or whatever the mechanic is), which feels unfair. Also add menu key, so player can restart game without refreshing the page.
Overall, I don’t think this game is very beginner-friendly. I did manage to defeat the boss, but I didn’t quite understand what changes in dark mode. With some balancing tweaks and clearer feedback, the game could be much more enjoyable!