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