Is there any achievement that you can permanently lose the opportunity to get due do whatever circunstances happen with your character ?
Im not necessarily talking about equivalent achievements, like how if you choose side A on the Yalahar Quest you get achievement A, and if you choose side B you get achievement B, etc.
Im talking about achievements that you simply lose and cannot get them or any equivalent, maybe because there is a level cap ? or they are behind a door you can only go past once ? or they are on rook/dawnport ?