Great game! I played until what I think is the end (the space above the elevator) and had a blast with it. With the feel of it and the quick respawn, I could easily see this being a great speed running game. The movement in some places felt a little jarring and quick - for example, the section where the large spikes moved from right to left - sometimes a light press of the left key would send me flying into the spike. But I loved the challenge of it all and it's one of the few games I've played all the way through.
Great job and looking forward to seeing what else you come up with!