TBH Durum isnt a hard boss to take down... the only real huge problem it has, is that maze sometime bugs and doesnt work properly (even tho they said it was fixed), the other problem is that like if it was scripted, some times you get a lag spike from the sv for like 2-3 secs (that happends on that boss only, and it will wipe you).
Other than that, its pretty easy, not to mention there are certain mechanics used, to actually make the maze phase much easier, and as an extra information and kinda new, in my guild we got information from some imperial members that found out that the skill "smoke bomb" from rogue, was bugging the maze, so if you raid with a rogue, tell him not to use it.
And after hearing about that and confirming it myself on todays raid, i wonder what other major defensive cd's may bug durumus maze...