1GreatGoateeGuySun 28th Jun 2015 I found another copy of Metroid: Zero Mission and decided to replay it for the first time in forever. My memories are a bit fuzzy, but I always took on Bristar Depths (Kraid) before Norfair (Ridley) in NES Metroid. However, this game seems to prevent me from progressing though Brinstar first. Is it possible to beat Kraid before Ridley, or will I have to come back? Kay-O.