How come nobody's commented on the awesome music that this game clearly wouldn't be good without? The music is half the game, guys. Without it, half the mood and intensity is gone. Good job again, HalycyonicFalconX, on another wonderful compilation of music. + to keep alive.
In the second to the last level (the level right before they say the next room has the trophy in it), you do not have to go through the entire level (including getting all of the keys) to beat it. When you are going down the first long drop (it has spikes at the bottom, forcing you to go left), go to the left like normal. Then, instead of going to the left to get the keys, you can just jump over the spikes that you just dodged. Shift when you get over the spikes and fall down again. Just play the last part normally (I'm sure you can do it) and go inside the door, shaving ~30 seconds off of your time!
As for the part where it says "suicide time :P", no need to restart, just jump upwards into the spikes to commit suicide.
I'm not sure who this will help; I am just posting because I realized these things mid-game and thought they would be helpful if not obvious...