Here is the full list of all 45 GWENT: Rogue Mage (Single-Player Expansion) achievements.
Defeat the White Dragon after destroying her Wings.
Finish your first run.
Reach Level 15.
Defeat the White Dragon.
Defeat the Mountain King.
Defeat the High Prosecutor.
Win 10 battles.
Reach Level 5.
Lose your first run.
Reach Level 1.
Win a battle without spending Energy.
Win a battle with a point difference of at least 100.
Win a battle.
Give the Dwarven Trader what he is looking for.
Unlock every other Achievement.
Finish a run on the Grandmaster difficulty.
Discover the secret behind the Ancient Writings.
Defeat the Fiery Fiend.
Have 5 or more Treasures in your deck.
Play 7 cards in a single turn.
Reach Level 50.
Complete a run in 30 minutes or less.
Gain the favor of a God.
Defeat the Swamp Monster.
Offer the Golden Nekker to a wishing well.
Watch the credits till the end.
Win a battle with a 1-point difference.
Have a unit with 100 or more power during a battle.
Free the Thing From the Box.
Finish a run on the Novice difficulty.
Answer the Trickster's riddle correctly.
Finish a run on the Apprentice difficulty.
Win against the Gambler three times in a row.
Reach Level 25.
Finish a run on the Master difficulty.
Defeat every enemy.
Defeat the High Prosecutor after disposing of his Enforcers.
Reach Level 100.
Finish a run on the Adept difficulty.
Find the source of magical energy in the Ruins on your first try.
Defeat the Mage Hunter.
Defeat the Failed Experiment without using the Serum.
Resurrect the Ancient Warrior.
Defeat the Failed Experiment.
Win 100 battles.