Impressive presentation, the backgrounds, parallax scrolling, sprites & portal warp effects are all great.
The task list could be a bit more detailed. e.g. it said "fulfill x's request" but I had no idea what that request was. Like somebody else already mentioned a map would be helpful (though on the other hand it would probably take away from the exploration).
There seems to be quite a lot of content in the game for a 3 days jam game, great job!