I really liked the sense of scale. Normally I'm not a big fan of being able to step-move within what feels like a single grid cell but here it worked.
The graphics and environments are great and detailed and with really appropriate ambient audio and the voice was a very nice touch.
The physics for the hammer and two-hand grip is interesting. I found it a little bit hard to maneuver in the beginning but after some practice I was swinging like I was Thor. It would be nice if it stuck to the hand more, or at least if one could toggle that.
The combat mechanics was a bit different and plays like a resource management based puzzle which require a wee bit of planning which is cool. It would've been really nice with a save system.
Also, running would be nice too. I.e by pressing front trigger while moving.
All in all I really enjoyed my time Alone in Space :) After all this time working with VR I'm still amazed how immersive it feels.
Edit: I did not experience any motion sickness :)
Well done :)