I can hear when they turn on the walkie but there's no audio coming out, please help

There's an email from Omnis that literally says his username is his name and the password is shed. Yet the day the word came, this combination would not work. I even tried adding the last name to the username as well. Seems like a bug with how blatant the username/password was given....

Played around an hour with my friend, my pc switched off due to overheating. Any advice to solve or reduce the game causing it? No other games cause this. I have cleaned my pc from dust recently.

Is the game randomized or is it like a campaign with a specific order of puzzles?

Like the tittle said, I still didn't know how to get this 2 achievement. I will really appreciate if someone told me how to get that 2 achievement. And maybe also how to get the "IMMEDIATE TERMINATION" haha XD