Super fun ! I like the norse mythology setting, the controls themselves are pretty tight, the control scheme is a but unusual but once you get used to it it's allright.
Pixelart and music are both really good,overall the game feels like it strikes the right balance between challenge and fun, though some of the jumps are a bit on the hard side.
I had fun anyways, i managed to reach the end, and i found the dog :) (or maybe considering the setting, fenrir makes a cameo i guess ? :p )
Solid entry, good job here !