Does many things very well. Particularly excellent chiptunes, although the obvious loop points are a bit off putting.
I'd remove that little grace period before loot becomes collectable. And either make the activation range of the signs much larger or put that information in the grumbling fellow's dialogue, I usually have to back up to read them.
A little rough around the edges, but even as it is it's one of the better browser platformers I've had the pleasure of playing.
Thank you for a pleasant information, we will try to fix some items on mobile verison.