This is a video on how to do Bloom and Doom feat of strength in 2014 on patch 5.4.2. You will need to use nothing but 2 macros and follow the video. Macro 1 will accept the quest and start you the quest. Macro 2 will just show you your progress on the feat of strength. It is not done in a single game. Credit towards it counts from different tries.
Macro 1 : /click QuestFrameAcceptButton
Macro 2: /run local a=5365 print(format("\124cffFFFF00TODO for %s\124r",GetAchievementLink(a)))for i=1,GetAchievementNumCriteria(a)do local d,_,c,x,y=GetAchievementCriteriaInfo(a,i)if not c then print(format("%s %d/%d",d,x,y))end end
So how you do it ? You start the normal quest, game starts, you leave vehicle. Quest goes failed. You click to disband the quest but don't confirm by clicking ok. You speak to the goblin just clicking him and click Macro 1. This will get you in a game. You build nothing and you wait for the carts to kill the first wave of zombies. If Ghoul spawns in another location from the first zombie wave you will be able to achieve 2 waves per game. If not just 1. When you are finished with your carts and can no longer save you, you leave vehicle, and repeat above until you achieved 15 waves and the feat