We regret that we were not able to clearly describe the controls and conditions for obtaining abilities at a decent level. I hope this helps you:
there are 4 crystals on the map (in addition to the one in the starting room), each of which gives different abilities:
1)One gives mind capture (If you hold E and click on an enemy, he will go to attack your enemies),
2)one allows you to deflect projectiles (You need to press F once to deflect projectiles closest to you),
3)another one allows you to grab an enemy by holding down the left mouse button and control him.
4)The last crystal gives you the ability to lift heavier objects (at the moment, there are only cabinets of such objects). All these crystals are located around the map, and to get the full arsenal, you need to clean it thoroughly.
We really hope that this comment will help you in getting a better gaming experience from our game!