Goes through levels 1-7. Funny puzzle with Master switch of Recreation level and special lock on Reactor level gave me much entertainment. Hardcore!
Then I stuck in level 8 door. Oops.
I tried everything.
Everything! Where is this key? Or, maybe, reactor activation codes?! Nada.
Well, I gave up and goes to FAQ. Wow! So code must be obtained
such way?! VERY hardcore!! I love this game!