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