Hello if your intressted in killing Patchwerk fast, then this is the guide for you. (Or just having trouble with the achivement to kill him under 3m)
Anyho here goes -
1. Clear ALL trash untill Patchwerk.
2. Three rogues stay and distract Patchwerk so he dosent run off.
(Make up a disctraction routation, so that you can get a quick start)
3. Go to plauge quarter and when you come to Loatheb you SAVE spores untill the boss is dead (Dont kill them).
4. Skip loot. (You can take it later)
5. Kill spores. (2 minutes with 50% extra crit procent for all the dps)
6. Teleport back.
7. Run back to the construct quater as fast as you can.
8. Begin the fight with Patchwerk with the 50% extra crit debuff.
You will have like 30-45 seconds left with the debuff. This will give your raid a big dps advantage. I hope all of you understand how this should be done.
Any questions? If so feel free to ask.
Enjoy!