Full list of all 17 Vestiges: Fallen Tribes achievements.
The base game contains 10 achievements, and there is 1 DLC pack containing 7 achievements.
Win an online game with the Amonsets
Summon Sobek during an online game
Win an online game after your opponent summoned Sobek
Win 3 online games in a row
Win all the Missions (Prelude to 21)
Complete all the Tactics (1 to 11)
Complete all the secondary objectives of the Missions (Prelude to 21)