Set foot on AR-Y 26 for the first time. I guess that counts as an achievement?

Kill 5 guards at once with a blunderbuss.

Free your first slave.

Unlock assault perk 7

Unlock demolition perk 5

Unlock stealth perk 4

Unlock demolition perk 8

Complete the side mission "The Virus".

Complete the side mission "In the Face of Adversity".

Complete the mission "New Cycles".

Complete the mission "Test Run".

Find all workbenches

Complete the story