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