The game is played by two people with one VR set and two additional trackers. The first player has the headset and is standing on top of a tower. The second player is blindfolded and has trackers on both hands and feet.
The two players need to work together to defend the tower. The player on top of the tower needs to look for enemies to instruct the blindfolded player where to go and crush the enemies.
Here is a short video of the game being played by testers. (in Dutch)