Here is the full list of all 12 Horde Of Plenty achievements.
Complete the game.
Collect 13 Apples in one game.
Trigger 'SPEED x3' Bonus Multiplier, 15 times.
Trigger 'SPEED x2' Bonus Multiplier, 10 times.
Collect 100 Apples
Collect 1,000 large coins.
Collect 1,000 hearts.
Collect 100 health potions.
Slay 10,000 enemies.
Collect 5 gold stars in one game.
Trigger 'SPEED x4' Bonus Multiplier, 20 times.
Trigger 'SPEED x5' Bonus Multiplier, 25 times.