I really like this game but I have a few queries:
1) In one area - near the top-left spawn point - there's a button to activate a door but no accessible block to use it. I tried taking one from another area but it's impossible for me.
2) In the same area (or rather underneath it) there's a secret column where you can launch your hook but not cling on to anything. Bug or feature?
3) The spawn points lead me to believe I have 5 out of 8 crystals collected. I've run thru the map several times but not managed to find any more.
I'd also like to mention that I too would have liked some kind of story - even if it was something like finding your spaceship to go home. I wonder if because of point 3, I'm missing a hidden ending.