Find Gothmau, oh wait they ignore him and let you die instead.

I'm guessing a vet base game dungeon should be pretty doable with the front trash pulls for most. The companions might not handle it, but tbh you're probably better off trading duels with a friend or guildmate alternating reses.

Make sure you're using one with a melee weapon and then attack a dungeon, story, or world boss with a lot of AOE. They won't get out of it. Pick one that you yourself can handle easily and won't interrupt you a bunch so you can rez them.

ETA
Personally, I recommend Havocrel, Duke of Storms. He's the final boss in Oblivion portals. He has immunity phases so there's a stopgap to how quickly he can be burned down (although it's not very long). And during that immunity phase, being within melee range and attacking him will cause you to take damage. The companions will keep on attacking him anyway, last time I checked, and die fairly quickly as a result. Since it's an easier world event the boss doesn't hit the player super hard either. You might even be able to rez other people's companions too. I think the Mirrormoor Incursions in West Weald will probably also lead to companion deaths, although stuff does hit hard in that one so you'll want to do it when they are multiple people around.

Update:
Lava dose not kill companions.

It may help to remove their armor and unbar any of their healing and protective skills, and don’t accidentally heal them with your own healing skills.

I plan on using Telvanni Peninsula Herald Seekers to kill my companions. I remember them deleting Sharp-As-Night fairly quickly.

i used one of the craglorn delves as i was doing the quest lol

i just unequipped all healing spells from my companion so they had no self heals, and just sat back and stayed alive, and then rezzed them when they needed to be rezzed

if you didnt want to have the companion kill things too fast, then unequip all weapons and skills from them too

The quickest/easiest place I found was running the dragons in N. Elsweyr. As somebody else mentioned, take their armour off.

There were lots of people running dragons yesterday, all with companions, all doing the same thing for the achievement - you don't even need to rez your own companion, other ungrouped people and other people's companions also count for the achievement.

Think I managed to get the achievement in 15 minutes or so - the majority of the time was spent running between the dragon sites and wayshrines.

personally, i'd go for dueling players and resing

I tried a WB which looked to be working until someone else came along, healed them and killed it. Tried a couple but I guess everyone's looking for a quiet WB!

Then I tried IA because that's another achievement anyway, but health didn't really move much and I got bored, so just finished the arc for the box.

I found dragons worked best because there were usually a few other companions there too so I could get 3 or 4 a time

You do not need to remove their armor and skills. Just do Y+right click when combat starts (not sure what it is for controller, check your control settings) and lead them into AoEs. Infinite archive cycle bosses would work, especially if it’s something like yoln. Skyreach can also overwhelm companions and the enemies spawn aoes on death. As a bonus, can take advantage of their increased exp gain since Skyreach is a leveling spot.

Another option would be to give them a taunt, Y+left click towards an enemy and then Y+right click so that the enemy will attack them and the companion will do nothing about it.

lillybit wrote: »

I tried a WB which looked to be working until someone else came along, healed them and killed it. Tried a couple but I guess everyone's looking for a quiet WB!

Then I tried IA because that's another achievement anyway, but health didn't really move much and I got bored, so just finished the arc for the box.

I found dragons worked best because there were usually a few other companions there too so I could get 3 or 4 a time

companions are almost unkillable in the archive because they were frankly useless before they made that change

craglorn group delves, or group dungeons, would work fine for killing the companions pretty easy (and those are instanced so you dont have to worry about someone else coming along)