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