This is a kind of a stealth game. You are represented in the 3D world as an avatar, walking around in two ways:
-by dragging (the blue and yellow helper circles then assist you by showing the direction and speed of the avatar)
-simply tap on a spot and your avatar will run there. This destination will be marked as a small blue sphere.
On the right there is a slider which enables you to »zoom« in the scene.
Above your head is the circle showing the degree of you health. In oder to be able to open the doors and inactivate the laser fences you need the key - the yellow skateboard on your back. You get it by colliding with a right object (e.g. the neuron cell) which is typically in the middle of two wrong objects.
Colliding with a right object makes you also twice more resitive to the shots as you were before. Beware of the video cameras which make alarm and take your key off.
