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