Here is the full list of all 129 HOARD achievements.
The base game contains 118 achievements, and there is 1 DLC pack containing 11 achievements.
Multiplayer: Win a 4-player PRINCESS RUSH match after being in last place at the halfway point
Multiplayer: Win a 4-player TREASURE match after being in last place at the halfway point
Defeat 750 thieves
Earn a gold rating on a TREASURE or PRINCESS RUSH level without upgrading CARRY
Win a 4-player TREASURE level without defeating any enemy dragons
Destroy all castles in a TREASURE level before any royal carriages are produced
Collect 250 tribute carts
Take no damage for the first 6 minutes of a HOARD MODE level
Take no damage for the first 5 minutes of a HOARD MODE level
Multiplayer: Defeat every dragon at least once in a 4-player match
Multiplayer: Steal from every opponent during a 4-player match
Take no damage for the first 4 minutes of a HOARD MODE level
Take no damage for the first 3 minutes of a HOARD MODE level
Take no damage for the first 2 minutes of a HOARD MODE level
Defeat 750 archers
Collect 100 wizard gems
Upgrade your hoard to level 12
Multiplayer: Steal at least 10,000 gold from enemy hoards during a match
Win 10 competitive multiplayer games
Earn a gold rating on a TREASURE or PRINCESS RUSH level without upgrading ARMOR
Multiplayer: Win a TREASURE match having never trailed in score
Play 10 multiplayer games
Multiplayer: Win a co-op level without the score multiplier ever being lost
Multiplayer: Earn a gold rating on a co-op level while scoring the highest on the team
Destroy 100 taverns
Multiplayer: Defeat an enemy dragon three times without being defeated in return
Multiplayer: Don't allow an opponent to ransom any princesses in a 2-player PRINCESS RUSH match
Multiplayer: Win by 5 or more princesses in a PRINCESS RUSH match
Multiplayer: Win a PRINCESS RUSH match having never trailed in ransoms
Multiplayer: Steal a princess from an enemy's hoard
Earn a gold rating on a TREASURE or PRINCESS RUSH level without upgrading SPEED
Defeat 750 knights
Collect 25 wizard gems
Destroy 1000 crops
Defeat two enemy dragons at the same time
Defeat 25 giants
Defeat 10 giants
Defeat 250 archers
Defeat 30 archers in a single TREASURE or PRINCESS RUSH game
Defeat 250 thieves
Ransom 250 princesses
Carry the most amount of gold possible
Destroy 250 farmer carts
Destroy 100 town centers
Destroy 100 castles
Win all single player PRINCESS RUSH levels at least once
Take no damage for the first 1 minute of a HOARD MODE level
Win a PRINCESS RUSH game without ever losing a princess during ransom
Ransom 100 princesses
Destroy 25 taverns
Defeat 250 knights
Win a TREASURE level without defeating any thieves
Collect 48 eggs. Hurry!
Destroy 250 wagons
Collect 5 wizard gems
Gain tribute status from all towns (more than one) on a level that is fully populated
Win a TREASURE or PRINCESS RUSH level without ever taking damage
Win a TREASURE level without burning any carts, wagons, or carriages
Win a TREASURE level without defeating any knights or archers
Upgrade ARMOR to maximum
Gather more than 100,000 gold on a TREASURE level without upgrading at all
Win a TREASURE or PRINCESS RUSH level without ever being defeated
Destroy 100 mills
Defeat 25 knights in a single TREASURE or PRINCESS RUSH game
Destroy 25 town centers
Destroy 250 crops
Destroy one of your own tribute carts
Capture your first wizard gem
Destroy 25 castles
Multiplayer: Win a match without using any PowerUps
Defeat 2 giants in the same game
Collect your first tribute cart
Gain tribute status with a town
Win a competitive multiplayer game
Get smashed by a giant
Defeat your first giant
Upgrade CARRY to maximum
Upgrade SPEED to maximum
Destroy 5 taverns
Defeat 25 knights
Ransom 10 princesses
Destroy 25 mills
Destroy 50 crops
Defeat 25 archers
Destroy 25 farmer carts
Destroy 5 castles
Defeat 25 thieves
Destroy 5 town centers
Destroy 25 wagons
Destroy 5 mills
Destroy your first castle
Win a TREASURE level without having any gold stolen from your hoard
Defeat 15 thieves in a single TREASURE or PRINCESS RUSH game
Incinerate 10 thieves who are dressed up like Santa's elves!
Upgrade FIRE to maximum
Ransom your first princess
Destroy your first thief
Burn a princess
Defeat an enemy dragon for the first time
Destroy 1000 farmer carts
Destroy 1000 wagons
Destroy 25 enemy tribute carts
Destroy 100 enemy tribute carts
Earn a gold rating in all single player TREASURE levels
Earn a gold rating in all single player PRINCESS RUSH levels
Earn a gold rating in all single player HOARD levels
Win all single player TREASURE levels at least once
Earn a gold rating on a TREASURE or PRINCESS RUSH level without upgrading FIRE
Win a PRINCESS RUSH game without ever collecting chests of gold
Multiplayer: Earn a gold rating on a co-op level while scoring the least on the team
Multiplayer: Earn a gold rating on a co-op level without ever breathing fire
Collect 1000 tribute carts
Achieve profile rank 15: Great Wyrm
Win 50 competitive multiplayer games
Win 100 competitive multiplayer games
Play 100 multiplayer games
Earn a Gold Medal on every multiplayer Co-Op map
Cause 12 groups of fireworks to go off in a HOARD MODE level
Multiplayer: complete a co-op game on every level
Burn down 1000 trees!
Destroy 250 bumper crops
Kill a thief using a bomb wagon
Destroy a bell-tower
Destroy a bumper crop
Kill a princess using a bomb wagon
Kill a castle using a bomb wagon
Kill a wizard tower using a bomb wagon
Kill two knights at once using a bomb wagon
Multiplayer: complete a game with 10 different Steam users