This game does not a anywhere a decent job of telling you what to do. I figured out I was supposed to be collecting furniture for my lounge but there's no indication of progress. Just that it's not finished.
Is there anything else in the sky besides the one portal? Why bother with one in the first place? You could wander the sky for ages with no idea what to do.
The arrows point to enemies and to the portal but that's not the goal afaik.
What are the coins for btw?
It's a pity because the art and music and nice and the gameplay is...okay. I don't like the awkward 8-direction shooting but the game is quite forgiving, so I'll let it slide.