Full list of all 83 Shotgun King: The Final Checkmate achievements.
The base game contains 23 achievements, and there is 1 DLC pack containing 60 achievements.
Win with Iron Maiden, Genderqueer and King's Mistress
Win with Castle, Kite Shield and Bodyguard
Kill The Red Book
Win with Ermine Belt, Kingdom Wealth and Unjust Decree
Win with Pillage, Revolution and Conscription
Win with Royal Loafers, Wand of Wings and Unfaithful Steed
Win with Ruins, Pillage and Kingly Alms
Win with Conclave, Cardinal and Sanctity
Win with Genderqueer, Saboteur and The Secret Heir
Win with The Moat, Wand of Gust and August Presence
Have 3 Magic Wands
Win with Two Rightful Curtsies and The Moat
Win with Ammunition Depot, Elite Gem and Small Fry Harvest
Win with Majestic Censer, Black Mist and Cornered Despot
Win with Zealots, Ascension and The Red Book
Win with Ritual Dagger, Taunting Hop and Subtle Poison
Win with High Focus, Crow's Blessing and Engraved Scope
Kill The Black Bishop
Win with Militia, Assault and Pikemen
Win with Three Extra Barrels
Win with Sacred Crown, Majestic Censer and Courteous Jousting
Kill The White King
Have 10 black cards
Win with Highest Dungeon, Cathedral, Trowel
Win with Court of the King, Court of the King, Full Plate Armor
Have 6+ rooks on the board at one time
Have 5+ queens on the board at one time
Beat Throne mode in less than 2 minutes
Win with Bloodless Coups, Peace, Philanthropy
Beat Throne mode without using a folly shield
Win with Guillotine, Cannon Fodder, Small Fry Harvest
Beat Throne mode without killing a queen
Make a rook save the king from a flying piece
Have 20+ ammo
Kill the white king by throwing his heir at him
Kill an Iron Queen
Win with Analysis Paralysis, Sacred Crown, Black Mist
Win with Royal Loafers, Cornered Despot, Unholy Call
Grab the queen and carry her to the square you start the round on
Win with Cavalry, Lookout Tower, Conclave
Destroy the last leader and the black king with a grenade
Win with A Piercing Truth, Blunderbuss, Welcome Gift
Win with Bushido, Caltrops, Taunting Hop
Win with Cavalry, Kite Shield, Courteous Jousting
Kill the white king by hopping on him
Beat Throne mode in less than 5 minutes
Finish throne at rank 15
Have 2 knights, 2 rooks, 2 bishops, 1 queen, 1 king, and 8 pawns on the enemy field
Win with Throne Room, Kingdom Wealth, Castle
Finish throne at rank 14
Get eaten by the white king
Win with Nightbane, Bushido, Ritual Dagger
Finish throne at rank 13
Push a piece out of the moat
Activating black mist 9 times
Finish throne at rank 12
Finish throne at rank 11
Finish throne at rank 10
Finish throne at rank 9
Finish throne at rank 8
Beat throne mode with this shotgun
Finish throne at rank 7
Have a firepower equal to 1
Finish throne at rank 6
Finish throne at rank 5
Finish a floor moving only with souls
Finish throne at rank 4
Get killed by your own grenade
Finish throne at rank 3
Have an arc of 120 or higher
Finish a floor without killing any non-leader piece
Finish a floor by turn 6
Have more ammo in your clip than in your max reserves
Beat Throne mode without letting a pawn promote
Finish throne at rank 2
Be threatened by 4 pieces at once
Finish throne at rank 1
Finish a floor without moving to a white tile
Finish a floor without killing any pawn