Full list of all 43 Torchlight II achievements worth 1,000 gamerscore. It takes around 60-80 hours to unlock all of the achievements on Xbox One.
All achievements
Achievements they've won
Achievements they've not won
Defeat the Nether King in hardcore mode
Find a legendary item
Reach level 100
Wear a completed armor set
Have 1,000,000 gold
Begin a new game plus
Use a map
Defeat the Nether King
Defeat the Dark Alchemist
Defeat Vyrax
Do 10,000 damage with a single attack
Defeat Aleera
Defeat Verona
Defeat Marishka
Assemble TrillBot
Defeat Killbot
Defeat Thiss
Defeat Cacklespit
Defeat Bloatfang
Defeat the Grizzled Alpha
Defeat the Wraith Lord
Defeat Boletus Rex
Defeat the Siege Guardian
Defeat Ezrek Khan
Defeat Aruk
Defeat the King in Masks
Defeat the Artificer
Defeat the Manticore's Mate
Defeat the Manticore
Fish using dynamite
Defeat Grand Regent Eldrayn
Defeat Kidrik the Mauler
Defeat King Pogg
Defeat Chilhoof
Defeat the Winter Widow
Defeat General Grell
Find a secret room
Defeat Mordrox
Defeat One-Eyed Willy
Die with a hardcore character
Start a harcore character
Send your pet to town
Defeat the Fallen Guardian