The Invasion Title update for Fantasy General II has 15 achievements.
Complete "Thieves at Night"
Complete "Battle for Heartspire"
Complete "Clanmeet"
Complete "Krell's Landing
Leave the Sunken Lands.
Complete "Invasion" campaign on easy or harder.
Complete "Invasion" campaign on normal or harder.
Complete "Invasion" campaign on hard.
Unlock the Bear Mount.
Unlock the Dragon Mount.
Kept Ulnar until the end.
Complete "Invasion" campaign on Legend difficulty.
Complete "Invasion" campaign on challenging or harder.
Complete "Invasion" campaign in Iron Maiden mode.