After using fuse and activating engine you can enter code by clicking on input field (like with PC in guide) and then press button below. If you can't get code for server rooms, hint - "GECI" in classroom.
I finally beat it and wow... this game is hard! I was actually missing a key earlier that I overlooked, so that's why I ended up being stuck haha. Your tip about the video file helped A LOT though because there's no way to figure out the "help" thing on the computer unless you watch that vid. It's gonna take a while to edit my video because I played for about 3 hours but I'll come back and post it when it goes live. Thanks for the fun/nightmare, haha! It was definitely a satisfying win. I wasn't gonna give up. It's 5am now and I'm just finishing playing haha
Wow! Thank you a lot for playing and for vid. I will check your video, and maybe i will add or fix something in the game, because you had problems. Also, i have not left a hint about "help" in pc because i thought "the first thing a person will think about when he sees the console is to write "help"".