[PTI] PeTIte [four]
Reaching the exit is intended to be medium-hard. Some moves will be tricky to execute and require timing. Advanced jumping techniques such as air-strafing and cube jumping are not required and should not be used. Once again, additional Easter-eggs are provided. These begin with the faith-plate which is not needed in the normal solution.
Challenge #1: find the hidden object and then exit (hard).
Challenge #2: reach the exit with the hidden object (harder).
Challenge #3: do the same, but do not destroy any objects (hardest).
Huge thanks to marKiu who came up with some awesome moves in the challenges which I have incorporated.
I spent at least 1h with absolutely no progress
After that I felt a bit stupid when getting the first cube... We talked about that mechanic before.
After that the normal solution came pretty quick.
I spent another 2 hours bringing the franken to the exit. Im truly impressed. I blocked the catapulted respawing first cube with the franken. I had two cubes in the upper area and carried the franken over the grates gaining height with the second cube. Then dropped it behind the funnel and went back into the funnel. If this is intended than hats off! Very impressive.
I try to make a solution video tomorrow.
5/5
Your use of the franken to block the respawning cube is not intended, although it sounds very cool. I'm unclear on how you can actually finish from there though. Can you PM me exactly what you do after reaching the franken? To my mind, it shouldn't be possible so I may need to fix something.
EDIT: I updated the map with a change to the "/"-lift. It's possible this might block your method for getting upstairs.
Challenge #1: find the hidden object and then exit (hard).
Challenge #2: reach the exit with the hidden object (harder).
Challenge #3: do the same, but do not remove the first cube from the laser funnel (hardest).
This is currently unsolved.
@quatrus: it's certainly easy to get stuck on any one of the cube retrievals. Let me know if you'd like a hint. Thanks for playing. 
When collecting the three cubes, the method for the first one is clear, but there are two ways to get the next. One of those ways is too unreliable to be intended, but I think it can be prevented.
I assume the restriction on "advanced jumping techniques" also applies to the challenges, but what about jumping from stationary cubes? There is one air-strafe jump that makes the challenges easier, but it can also be prevented.
I'll elaborate some more in a private message.
I may block that as you suggest however.
Not wanting to give too much away, it involves making a cube face the wrong way.
I made a full recording of my Challenge #3 solution.
The "trick" is after ~3:05 in the video, but I originally achieved the same result in a less elegant and more risky manner: pushing the cube with my knees!
Another thing - after going through all the challenges, I still haven't found a practical use for the upstairs button.
The collision with Frank onto the grating was also discovered by marKiu. It's not intended and I was torn as to whether or not to block it, as it's quite fun. The fix would be to set the edge of the grating 3 squares back closer to the staircase. My final move is a different trick which no one has found so far.
petite4_#3_end.zip
As for what you intend for the earlier part, I give up.
Normal exit: http://youtu.be/1mZoUDQdipQ
Challenge #1: http://youtu.be/V79pIkSLOnE
Challenge #2: http://youtu.be/fg8pSbj-6p0
Challenge #3: http://youtu.be/J-eD1apnt0s
As you can see, marKiu's solutions feature prominently. This is because I was able to re-write the challenge rules in order to allow them to remain without breaking my own solutions. His faith-plate method (and later CF's variant) actually became required for the new no-destruction challenge. Anyway, I hope you guys enjoyed it. Very good testing! 