I'm writing this as of my 12th death in this game, since I'm not too much of a reviewer I'll get to my points (Update):
The Good: I LOVE the pixel art style it's fun yet not too visually distracting which is nice to see in platformers now a days. it's very easy once you get used to control scheme and music is nice to listen to.
The Bad: the tutorial is way to inconspicuous, like it's a fun idea and after I figured out that the starting menu is a tutorial, but I feel as if the input layout was not obvious like when I see arrow keys, I assume I can use the arrow keys, but it's only tied to WASD which isn't bad, but it needs to be communicated
(bonus: I'm not too sure if this was a part of the game itself but after some time when the game runs the inputs just stop working after a bit now sure if because I'm playing on the browser, but it happens and it's weird; Once I get to the end, I'll update this)
(yeah, I'd love to see more levels, it's pretty fun)