For live guk, I /target nameds, warp t and kill. Most of them are isolated, a few of em can have adds. I usually use a necro and SK for the brunt of it, then once I kill everything except the crusader, priest and last room with chest, I /warp all my boxes to crusader's side room, kill crusader then pull preist to the crusader's room to kill. No doubt just the SK and necro can do it as well, it's just faster with all my boxes DPSing. All the nameds before that are much easier.
Then I run the SK to the halls just before the pool with the Huge water elemantel in it, /warp t rest of my boxes there, clear a couple roaming frogs, and start pulling towards the herbalist/chest room. Last room, I just pacify 3 or 4 mobs, pull the rest and kill, then kll what's left and loot chest. I was using HT before this and never even tried without HT till the nerf. Honestly, I think for all these monster missions, it is faster and easier to just pull and kill like normal then it was when I was suiciding my SK all the time to use HT.
The other missions are even easier. Just about all nameds you need to kill has a safe hall/area right near it that you can run to /warp rest in then pacify pull what you can handle.
Pets are overpowered. The necro pet easily out DPS's the SK without the necro adding any farther DoT's. Lots of people swear by enchanters and say they solo the whole thing with just the enchanter, I just never tried it. My method works for me and takes me under an hour of very low intensity playing per mission.