-Does the game provide too much or not enough assistance to the player in terms of solving puzzles?
I think the hints are helpful, but if possible you should have them be toggleable so that if someone doesn't want hints or wants hints or some of the time they can select it.
-Are there any specific puzzles/mechanics you would like to see?
I would like to see puzzles that incorporate several spells in tandem. You have a lot of potential with the spells.
-Does this room look like a spaceship room?
Now that I read this question it does. I did not get that feel initially, however.
-Does the walking seem intuitive?
Walking by clicking makes sense. Having a character model will help out a lot in terms of direction, however.
-Does the spell usage seem intuitive?
Yes, it does but when I cast a spell it is hard to tell if it actually works or if something went wrong. I'm sure this will be ironed out in future playtests.
-Does the information in the text box help?
Yes, there's lots of times where I was confused and it helped.
The sensitivity of the camera is a bit too high.
The movement is also a bit slow in my opinion.