Here is the full list of all 35 SpellForce 3: Fallen God achievements.
Get your entire party killed.
Eat Chieftain Narjak's heart.
Summon Mugwa's Cub.
Skip 100 dialogues.
Revive a fallen hero.
Play the Fallen God campaign in co-op with a friend.
Find all optional Time Windows in the Temple of the Sacred Seal.
Make a decision in the Mountain Village.
Find three hidden statues near the smith.
Complete the optional Brittlebone Fields mission.
Fight dwarves with a special kind of uprising.
Solve the mosaic puzzle.
Escort the harvester for a second round.
Unlock all areas in the Temple of the Sacred Seal.
Collect the maximum amount of bone dust.
Collect all Hybernian Writings.
Fully assemble the body of Zarach's cub.
Finish the Fallen God campaign with the tribe.
Finish the Fallen God campaign without the tribe.
Summon five Ancestor Spirits simultaneously.
Accumulate 100 Rage points with Noag.
Have Noag collect a total of 100 junk.
Have Grungwar buff Akrog's totem.
Have Zazka carry five ingredients at once.
Use a Potion of Fresh Start.
Tinkerer
Craft 50 items.
Spend 30+ hours in one playthrough of Fallen God.
Beat the Fallen God campaign on Circle Mage difficulty.
Build every type of Ironbeak at least once.
Succesfully train a War Bringer.
Sidegrade a Troll unit by sending it to a different school.
Win a ranked match playing Trolls.
Finish any ranked match.
Look at the credits of your own volition (or because you really want this achievement).