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