Ow, my brain
I just finished level 30 and I think I pulled a neuron from concentrating so hard. I wonder if that is actually possible...
Anyway, this game is extremely intense in its way. Not like a first person shooter, but the need to think about many different things at once while memorizing floor layouts, keeping track of invisible moving obstacles, remembering where teleports lead, and at the same time actually playing the game. I admit I cheated a little by writing down some directions and placing bits of sticky notes on my monitor to use as landmarks.
Advice to others: USE THE GRID! This game would be next to impossible without it. Keep track of the holes and move to beacons often to refresh your memory.
To deal with the moving blades, try counting, they will always follow a pattern. For one level, I identified that all of the blade in the level would move to the center at once and they all moved clockwise. I counted 1...2...3...4...1...2...3...4...Etc as they hit the walls and knew that when I said "1" they were in the center and I had to move when I said "3".
Other than that, focus like crazy.
Great game! Hard but not too hard and very, uh, how to say... mentally stimulating. Yah.
Good luck achieving immortality! (is that the prize at the end?! I don't know! Try to find out!)