Here is the full list of all 61 Death Rattle - there are Hell Unleashed achievements.
Enter Elm Cliff Town
Enter Lost Mead Farmlands
Enter Lost Mead Outlands
Enter Lost Mead Mine
Enter Lost Mead Stronghold
Enter Wish Wind Graveyard
Enter Wish Wind Hinterlands
Enter Red Dusk Mausoleums
Enter Red Dusk Pits
Enter Red Dusk Battlefield
Enter Red Dusk Grotto
Enter Black Falls Sewers
Enter Black Falls Swamp
Enter Black Falls Forrest
Enter Lark Reach Caves
Enter Lark Reach Canyon
Enter Hollow Edge Courtyard
Enter Hollow Edge Dungeon
Enter Hollow Edge Basalt
Use The Crafting Station
Use The Spirit Station
Use The Grinding station
Find A Secret Chest
Find A Secret Crate
Collect A Spirit
Activate A Lever
Kill A Skeleton Warrior
Kill A Skeleton Mage
Kill A Skeleton Overlord
Kill A Skeleton Floater
Kill A Skeleton Turret
Kill A Skeleton Golem
Kill A Skeleton Giblet
Kill A Hog Giblet
Kill A Igneous Giblet
Kill A Forrest Golem
Kill A Igneous Golem
Kill A Fishling Biter
Kill A Fishling Spitter
Kill A OrcWarrior
Kill An Orc Hurler
Kill A Spiderling
Kill A Spammer
Kill A Fiend
Kill A Ghoull
Kill A Hackless
Kill A Summoner
Kill A Troll Beast
Kill A Troll Bomber
Kill A Troll Sage
Kill A Troll Warrior
Kill Arach
Kill Writhe
Kill Bone Bringer
Kill Crimson
Kill Tchall
Kill Diabolus
Kill A SpectreApparition
Kill A Spectre Ethereal
Launch The Game For The First Time
Finish The Game For The First Time