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