Thanks, glad you're enjoying it :D
The soundtrack was originally going to be 8-bit, but when we heard the first pass on a couple of the songs and SFX we felt it didn't fit. Glad you like it
The hint idea is a really good suggestion. Maybe down the road on a future update we can work something like that in, thanks :D
As for the Guardian; the solution may not be the bird, but it's still linked to Uninvited. When you get the item needed, you'll know what it is.
Solution:
[SPOILERS]
USE the SHOVEL on the loose earth in the room called ALFALFA CLEARING. You'll dig up a chest with a SCROLL III and the BLOTHNY GEM. USE the BLOTHNY GEM on the guardian to make it fly away.