From the Depths achievements

Reach level 100 in adventure mode on Neter using standard game constants

Destroy the Gorgon in Quest for Neter on Godly difficulty

Destroy the Damascus in Quest for Neter on Godly difficulty

Destroy the Davy Jones Outpost in Quest for Neter on Hard difficulty or above

Destroy the Scarlet Dawn in Quest for Neter on Godly difficulty or above

Destroy the Damascus in Quest for Neter on Easy difficulty or above

Destroy the Davy Jones Outpost in Quest for Neter on Godly difficulty

Get one of your own designs beyond version 100

Destroy the Davy Jones Outpost in Quest for Neter on Easy difficulty or above

Take part in a campaign battle with 3 or more teams involved in it (including you). Fixed-difficulty built-in campaigns only.

Kill 500 volume per second in a campaign battle (on fixed-difficulty built-in campaigns with standard game constants). Measured when the battle ends.

Get a unit that provides the maximum strategic radar range in a campaign