Here is the full list of all 39 Rogue Heroes: Ruins of Tasos achievements.
Record all enemies in the Book of Beasts
Reach floor 25 in the Endless Abyss
Defeat Omega Titan and save Tasos
Open all Shortcut Ramps
Catch all fish types
Collect all classes
Collect all Power Spheres
Dig up 20 buried objects
Defeat Glaciostraza, Guardian of Kryomar Temple
Stop the blizzard on Mount Sekoset
Catch a fish
Collect all equipment
Defeat Kaimieror, Guardian of Fyrotek Castle
Stop the lava flow in the Overgrowth
Collect 100,000 total Gems
Spend 150,000 total Gems
Bust up 100 crates
Defeat Rhizomorph, Guardian of Welestar Chamber
Block 100 projectiles with the shield
Ride in a Croaker in Crumwell Swamp
Open 200 chests
Harvest 50 crops
Defeat Necrosaur
Spend 50,000 total Gems
Light 100 torches
Defeat Koleoptera, Guardian of Terakar Keep
Collect 10,000 total Gems
Break 500 pots
Build all buildings
Destroy 500 monsters
Collect acorns for Evie
Cut down 500 bushes
Spend 5,000 total Gems
Build 10 buildings
Build 5 buildings
Collect 1,000 total Gems
Acquire the Book of Beasts from Nik
Build Griff's Workshop
Die and be resurrected