I liked how this played out but I killed very enemy on the first level yet the door did not open for me... I exited to desktop after trying it 3 times but it seems that reading through the comments it only happened to me. Any advice? Ill rate it for now but if I can play through it all it might improve (or worsten for all i know) my opinion of the game and I think it's unfair if the fianl rating comes from someone who hasnt played everything made.