I really enjoyed playing this game! Despite there only being 3 attack types, each boss manages to feel a bit unique as some bosses might take longer to do a specific attack or a certain move exposes the boss for a critical hit (as indicated by the !?). It's nice to be able to tell when the boss is about to attack through the exclamation icon (the !). These factors made fighting the bosses fun and challenging while not being unfair. A good example is the final boss, where sometimes the boss will do a double attack, other times it will do a long wait before an attack. Because of the icons, with enough practice, I was able to beat the final boss.
The controls are very simple, consisting of only 4 buttons, which makes it very easy to grasp how to play the game. Either WASD or the arrow keys can be used, which is very nice as it provides more options. The sound effects that are present help to give the attacks and dodges more weight, however I wish there was more sound effects as well as music to make the game even more immersive and epic. The visuals are nicely drawn and clearly communicate what actions the player should take, but the sprites look fuzzy for some reason. Also RIP theme.
Overall, this is a solid game!