Here is the full list of all 39 SpellForce 3 achievements.
Played a practice skirmish match against the AI.
Defeat a human opponent in PvP.
Played the campaign together with a friend.
Beat the SpellForce III campaign.
The fate of Nortander lies in your hands.
Fully upgraded Isgrimm's armor.
Slew the Elder Dragon.
Unlocked the elven faction and upgraded it to the maximum.
Unlocked the orc faction and upgraded it to the maximum.
Reached hero party level 20 in the campaign.
Learned how to summon Titans.
Unlocked the human faction and upgraded it to the maximum.
Completed the Mentalist Ritual at Aonir's Blade.
Rallied all possible companions to your cause.
Gave more than the bare minimum when asked for help.
Sided with the Iron Falcons in Aonir's Blade.
Gained the allegiance of the Orcish Firewielders.
Gained the allegiance of the Morhir Elves.
Brought a tribute to the God-King.
You avatar died.
Stop touching the workers!
Gained the allegiance of the Wayfarers.
If only real life were as simple as that.
Helped all of the Refugees in Farlorn's Hope.
Defeated the Nortander army in the Iskander Wilds.
Got your first level up.
Claimed Mulandir as your base of operations.
Escaped the Grey Keep with a new ally.
Dealt with Alistair.
Finished Liannon.
Freed all the prisoners when escaping from the Grey Keep.
You fulfilled a task for the Elder Dragon.
Sided with the Deathmen in Aonir's Blade.
You annoyed the composer by muting the ingame music.
You were killed by peaceful wildlife.
Reached the maximum hero party level in the campaign.
Those prisoner clothes really look good on you.
You were killed by a tiny spider. That's actually pretty impressive.
Defeated the Orcs in Farlon's Hope without producing extra units.