Here is the full list of all 41 Siege Survival: Gloria Victis achievements.
Complete the Survivalist scenario.
Unlock all available playable characters.
Unlock Mikel as a playable character.
Find and collect all the treasure chests available in the whole scenario.
Complete the Defender scenario.
Unlock Jacob as a playable character.
Reach 75 points of the the Bastion strength.
Provide the soldiers with enough food that they get a boost
Unlock Demetrius as a playable character.
Win all battles of the whole scenario.
Complete the Scavenger scenario.
Unlock Kimbra as a playable character.
Kill 3 enemy guards during a single night.
Unlock Rose as a playable character.
Finish the scenario without loosing any survivor.
Complete the main storyline in one of the following scenarios: Story, Quick start, or Explorer.
Keep the defence so firm, the relief forces completely smash the enemy.
Galvik survives and returns to the Bastion.
Reach 50 points of the the Bastion strength.
During an enemy assault exceed their strength so much, they will flee from the battlefield.
Craft a sword using the upgraded Armoury.
Use the trebuchet during a battle.
Prepare for using the trebuchet by scoring 4 points in scouting before a battle.
Craft a heavy armour using the upgraded Armoury.
Unlock all the scavenge starting point during a single scenario.
Build enough beds for all characters.
Complete trade with any merchant at night.
Send out at least 2 characters to scout the enemy lines at night.
Defender unlocked scenario is now available for you to play
Scavenger unlocked scenario is now available for you to play
Survive the first 7 days of the invasion.
Survive a fight during the nighttime scavenge.
Unlock Gerard as a playable character.
Manage a party of 4 characters at once.
Survivalist unlocked scenario is now available for you to play
Kill an enemy guard at night.
Unlock Rena as a playable character.
Join any new character to your group.
Collect all piles inside the castle.
Quick Start scenario is now available for you to play
Explorer scenario is now available for you to play