Here is the full list of all 38 Dead Ground achievements.
Unlock King
Survive day 6
Unlock "Tormented Soul" Artifact
Fully upgrade the gatling tower
Unlock Quadrat
Fully upgrade the mini nuke tower
Survive day 4
Fully upgrade the H.S.M. tower
Fully upgrade the sniper tower
Fully upgrade the mammoth tower
Fully upgrade the hell bringer tower
Fully upgrade the commando tower
Fully upgrade the cryoblaster tower
Survive day 2
Survive day 8
Survive day 10
Beat the final boss
Collect 100,000 scrap in total
Collect 10,000 water in total
Kill 10,000 enemies
Kill 50,000 enemies
Kill 100,000 enemies
Kill 10 bosses
Kill 50 bosses
Kill 100 boses
Kill every unique boss at least once
Unlock Gogo
Unlock "The Death" Artifact
Unlock "Shard Of Life" Artifact
Unlock "Sword Of Fear" Artifact
Unlock "The Secret" Artifact
Unlock "Mask Of Terror" Artifact
Unlock "The Desire" Artifact
Unlock "Orb Of Luck" Artifact
Unlock every character and artifact
Beat the game with the death artifact on
Sell 500 items
Buy 500 items