Start menu is cool, though the UI doesn't scale properly for the Start Game button for me.
The background pixel art is pretty awesome, sets the story up nicely. The music is neat, and fits the setting well. I like that there's multiple tracks too. Would recommend adding looping to music so that it doesn't just cut out if someone is doing stupid stuff and remaining on a level.
Enemies can push you, but you can't push them. I used this to glitch out of the map, and got stuck (hence how I discovered music doesn't loop). Would perhaps recommend making enemies slow the player, rather than stopping or pushing them.
There's no need to fight anyone. Because the doors don't check if enemies are dead, you can beat the entire game by using the W and E keys alone.
I have little idea what the purpose of the "spell" is, though I assume it's higher point damage. Would be cool to have a ranged spell though.
The player model is basic, but has very good movement animation. The enemies are the opposite, with cool designs but discordant visuals when moving (have weapon out when static, but sheath it when moving, and don't have the sheath at all when attacking. They're also pretty bad at hitting the player in general.
Overall, I think the Art aspect of this game is excellent. Tweaking a few gameplay elements would make the game an awesome oneshot.