Thanks for your great feedback
I've created a new version, beta 2. Changes:
Room 5: Made the glass tube more plausible.
Room 6: Box room - thanks Jits
Room 7: Adjusted a few lights. Changed some corridors in the lowest part. Reduced the need to crouch (if you know the right way
). Hopefully fixed most glitches.
Room 8: No more flying platforms. Tore down a wall.
Room 9: Made this slightly harder. Now also featuring a number display.
Thanks to basilo for all^Wsome of the work. Have fun!