Warhammer: Vermintide 2

This solution requires you to be playing on Legend difficulty.

If you are terrible at glitching maps and doing precision jumping (aka like me), here's something that may help you.

Using Sienna (any class) with the Conflagration staff will make this run slightly easier, as using a charged Conflagration blast will light up an area for a period of time. This way, you don't necessarily have to carry the torch at all times -- you can carry it when no enemies are around, then drop it and charge Conflag light up areas when enemies are nearby.

On a solo run? Even better, use the Battle Wizard and its 100% block cost build (can be achieved by getting 30% block cost reduction on your melee & necklace, and 40% reduction from the Burning Vigour level 15 talent), and block the whole time while letting your bots do the heavy lifting. You will though have to help clear hordes from time to time so your bots don't get swarmed.

Unrelated to achievements: this trick is also basically the only way to get the Okri Challenge for going through the same level without anyone on your team ever picking up a torch (in case you're a completionist like me).

It's possible to gain this achievement with a Battle wizard (teleporting) and ironbreaker (can kill himself quick with drakes).

I found this Video in a forum and this glitch still works.
https://www.youtube.com/watch?time_continue=196&v=yq3sh-...

When the mage reach the roof on (1:15) , the Ironbreaker commits suicide, so that the bots teleport and can pick up the mage on: (1:19) .

The achievement pops up for the group, when the mage reaches the "Dreieck Platz" 1:57.