I like the movement, I really do, it reminds me of Super Metroid but even tighter.

The "You died" button was completely illegable (Couldn't read) and I couldn't get past the second enemy... Not sure if I missed something.

When I died, I got a LOT of error from my browser, not sure what it was trying to do there...

Without any instructions I had a hard time knowing how to get past the second/third enemy, and couldn't read the text at the end except "You died lol". Some introduction would improve the presentation, because I really liked the scenery and the character was animated well.

Sadly, the game crashes when I die and then I have to restart from the beginning - from what I could see it looked very nice and killing enemies felt nice and juicy. Due to the crashing I wasn't really able to see that much of the game tho.

Nice artstyle and catchy music