Full list of all 33 Pity Pit achievements worth 4,000 gamerscore. It takes around 0-0.5 hours to unlock all of the achievements in the base game on Xbox One.
The base game contains 18 achievements worth 1,000 Gamerscore, and there are 3 DLC packs containing 15 achievements worth 3,000 Gamerscore.
Buy 5 materials
Collect 100 coins
Collect 100 materials
Kill 20 enemies
Dig 500 blocks
Collect 50 coins
Kill 10 enemies
Buy 3 materials
Buy 1 material
Detonate 6 bombs
Dig 250 blocks
Collect 40 materials
Detonate 3 bombs
Collect 20 materials
Detonate 1 bomb
Collect 10 coins
Kill 2 enemies
Dig 10 blocks
Kill 40 enemies
Kill 30 enemies
Collect 150 materials
Collect 150 coins
Collect 200 coins
Collect 300 coins
Kill 70 enemies
Collect 250 coins
Kill 60 enemies
Kill 50 enemies
Collect 550 coins
Collect 500 coins
Collect 450 coins
Collect 400 coins
Collect 350 coins