2K Czech interview questions

Only got to the first stage of the interview, which was a technical test. Had to sign an NDA in a language I don't even speak, and then was given as much time as I needed to complete the task. I completed the task to the desired specifications, and got rejected. When I asked why they gave me 4 negligible reasons. One was that I used one data structure instead of another (something which could have been changed/'fixed' in less than a minute). The other 3 reasons were similarly small in scope, and all of which fit under the 'knowing ____ skill is a plus' section of the job requirements. Be careful on the technical interview here. And know before applying that if the job listing says a certain skill isn't required, that is not the case.

Very good communication, job offers made to fit the person. Fast invitation, friendly interview, casual. Talked about games, tested my English. It was 2 hiring guys, no hr, just people from team.