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