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Confusing Combination

This is probably my best level.
It contains 4 tests with:
-Gel
-Light Bridge
-Laser
-Excursion Tunnel
If you get stucked or you died and you are too lazy to do everything again, just type >>sv_cheats 1<< and >>noclip<< in the console so you can fly to the part you were.
There is one (badly hidden, it's not easy to hide something if you only have these huge panels) secret.

Have fun! :)