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