I am after the "Did It All" achievement which states "complete all side missions'. I have completed all the side missions apart from killing Terramorphous. I am level 34 and not strong enough to take on Terramorphous.
I obviously don't want to do all the side missions again, do they stack between playthroughs? So in the vault hunter mode play through all I have to do is kill Terramorphous for the "Did It All" achievement, since I did all the other side missions in my normal play through.