Here is the full list of all 50 Darksiders II achievements. It takes around 60-80 hours to unlock all of the achievements on Windows.
Death Reaches Level 30
Unlock All Combat Moves & Upgrades
Defeat Samael
Complete 3 different high dives in the Foundry
Unlock Everything
Complete GnoMAD
Complete Lord of the Black Stone
Defeat the four creatures named by Thane
Collect the Voidwalker
Complete The Crucible
Defeat the Soul Arbiter
Defeat The Wailing Host
Gift An Item To A Friend
Your First Respec
Collect the Soul Splitter
Unlock the final skill in either skill tree
Defeat Absalom
Complete all Secondary Quests
Complete the game on APOCALYPTIC
Open all Death Tombs
Complete Sticks and Stones
Collect the Phasewalker
Complete The Book of the Dead
Equip elite items to all slots
Defeat Archon
Complete The Rod of Arafel
Complete The Mad Queen
Defeat Wicked K
Complete Lost Relics
Complete Stains of Heresy
Defeat Basileus
Open The Well Of Souls
Complete the game on NORMAL
Complete the game on any difficulty setting
Complete City of the Dead
Collect the Interdiction Stone
Complete The Toll of Kings
Complete The Lord of Bones
Level Up Your 1st Possessed Weapon
Complete Tree of Life
Defeat the Guardian
Complete Heart of the Mountain
Collect Deathgrip
First use of Fast Travel
Complete To Move a Mountain
Complete Tears of the Mountain
Unlock Reaper Form
Complete Fire of the Mountain
Collect Redemption
Defeat the Crowfather