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