Here is a Darksiders 2 achievements guide.

Accomplish the indicated achievement to get the corresponding number of Gamerscore points:

• BFA (10 points): Unlock everything.
• Full Potential (30 points): Unlock All Combat Moves & Upgrades.
• Pay It Forward (10 points): Gift An Item To A Friend.
• Feeding Time (20 points): Level Up Your 1st Possessed Weapon.
• Epic! (10 points): Death Reaches Level 30.
• Abracadabra (30 points): Open all Death Tombs.
• Is There Anyone Else? (30 points): Complete The Crucible.
• Respec Yourself (20 points): Your First Respec.
• Bravo Old Chap (20 points): Defeat Wicked K.
• Grim Reaping (30 points): Unlock Reaper Form.
• The Secondary Adventure (50 points): Complete all Secondary Quests.
• A True Horseman (90 points): Complete the game on APOCALYPTIC.
• Four My Brother (90 points): Complete the game on NORMAL.
• A Stroll In The Demonic Park (30 points): Complete the game on any difficulty setting.
• Additionally, there are 36 secret achievements:

• All You Can Eat Buffet (30 points): Complete Sticks and Stones.
• I've Brought You A Gift (30 points): Defeat the Soul Arbiter.
• Antiquing (30 points): Complete Lost Relics.
• Like a Noss (30 points): Defeat the four creatures named by Thane.
• Lord of the Black Stone (10 points): Complete Lord of the Black Stone.
• The Mad Queen (10 points): Complete The Mad Queen.
• Stains of Heresy (10 points): Complete Stains of Heresy.
• Mass Ruckus (10 points): Equip elite items to all slots.
• Diamond Geezertron (10 points): Unlock the final skill in either skill tree.
• The Rod of Arafel (10 points): Complete The Rod of Arafel.
• The Root Of Corruption (10 points): Open The Well Of Souls.
• City of the Dead (10 points): Complete City of the Dead.
• The Book of the Dead (10 points): Complete The Book of the Dead.
• The Court of Bones (10 points): Defeat Basileus.
• The Toll of Kings (10 points): Complete The Toll of Kings.
• The Lord of Bones (10 points): Complete The Lord of Bones.
• Tree of Life (10 points): Complete Tree of Life.
• Heart of the Mountain (10 points): Complete Heart of the Mountain.
• To Move a Mountain (10 points): Complete To Move a Mountain.
• Gnomad (40 points): Complete GnoMAD.
• Tears of the Mountain (10 points): Complete Tears of the Mountain.
• Fire of the Mountain (10 points): Complete Fire of the Mountain.
• The Triple Lindy (10 points): Complete 3 different high dives in the Foundry.
• By Your Command (10 points): Collect the Interdiction Stone .
• Death Will Tear Us Apart (10 points): Collect the Soul Splitter.
• Looks Familiar (10 points): Collect Redemption.
• Tearing Time A New One (10 points): Collect the Phasewalker.
• I Can Has Cake? (10 points): Collect the Voidwalker.
• The Spectral Touch (10 points): Collect Deathgrip.
• Pathfinder (10 points): First use of Fast Travel.
• The Big Boss (20 points): Defeat Absalom.
• Soul Crushing (20 points): Defeat The Wailing Host.
• It's Not Over (20 points): Defeat Samael.
• Clipped Wings (20 points): Defeat Archon.
• Dust to Dust (20 points): Defeat the Guardian.
• Crow Carrion (20 points): Defeat the Crowfather.