Eventually the game was deeper and had more content than it seemed at the first look on it.
The professor's aide in the first lab room seems to have stepped through the portals a few too many times, judging by how he seemed to phase out of the normal dimension (his model's mesh would need some fixing).
The first bot I encountered was seemingly invincible, until he turned around when I disengaged. Fortunately the other ones were somewhat easier.
Performance in the landscape behind the last portal was seriously lagging, this scene would need some optimizations...
The controls could need a bit of improvement as well, at some points I was moving towards the front and suddenly my view flipped around.
Given the huge scope of the game it's no wonder it's so unpolished. So perhaps next time, scope your project a bit down so you can make it a more rounded experience instead... ;)