Here is the full list of all 49 Death Must Die achievements.
Not a scratch
A cat dies 9 times
The magic of friendship
Win an attempt as Skadi and her wolves
Win an attempt as Front using the Rampage talent
Defeat The Djinn as Front
Instant bash
Win an attempt as Lorien using the Bask in Greatness talent
Win an attempt as Lorien using the Whistling Arrow talent
Level up to 40 as Lorien
Defeat The Insect Queen as Lorien
Win an attempt as Avoron using the Light Rays blessing from Lady Justice
Win an attempt as Skadi with Darkness
Win an attempt as Nixi using the Mind Reaper talent
Win an attempt as Nixi using the Endless Night talent
4 Times jumper
Do not take the purple bait
20 Seconds for two bats
Win an attempt as Merris using the Telekinesis talent
Win an attempt as Merris using the Charged Field talent
What we do in the 10th shadow
5 Lamps to turn off
I don't need no handouts
Stop the evil old man
50 Shields for my wall
25 With a single blow
A d20 of 400
A stake for a vampire
Travel to 40 different locations in an attempt as Avoron.
Lose an attempt as Lorien
Kill 1000 Skeletons as Lorien
Traverse 50000 distance as Lorien
Get 8 visual effects
33 Sync-Ups
I need 40 good men
Time travelling twice for victory
Number go up to 30
Defeat the Baron
On the hunt for a bat
999 Bandages
50 Summoning orders
I wield the 5 elements
4000 Pounds of jelly
300 Steps
A total of 2000 natural 20 damage
6000 Bones to pick
100000 Wounds Inflicted
A red and a blue bat
500 bones under the sword