Really fun! A great combination of action, strategy, and tactics. The ability to upgrade your "trips" is really neat and adds an extra layer to everything.
The only thing is I would make it more clear when the crystals become depleted!
Yea... with all the rush, i just added an image of a diamond on screen going from red to white like a progress bar. I know it is not a perfect solution, but with the energy I had at that moment it was the only thing possible. Thank you for the feedback!