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