I like the sound design and animations quite a lot, they're well done. I would like some sort of reaction when hit/ damaged by the lava or the orcs but the UI does work perfectly fine in this regard.
On the topic of damage the hit box of the orc should be adjusted, I tried bobbing and weaving: i.e. moving away and atacking, but I still took damage, tried this multiple times but I guess you're just meant to mash then until they die which is not particularly engaging.
On death I would like a respawn button, rather than having to reload the page to play again.