The The Last Autumn Add-on for Frostpunk (Windows) has 20 achievements worth 405 gamerscore.
Build the Generator in The Last Autumn scenario
Build the Generator in The Last Autumn scenario in Survivor Mode
Build the Generator in The Last Autumn scenario on Hard difficulty
Build the Generator in The Last Autumn scenario before the last shipment
Have 4 Advanced Docks and 12 Reloading Stations working at the same time
Build the Generator in The Last Autumn scenario without setting up any Foragers' Camps
Build the Generator in The Last Autumn, employing people neither in Safe nor Deadly workplaces
Use Telegraph Station 20 or more times
Build the Generator in The Last Autumn scenario using no Coal consuming buildings
Build the Generator in The Last Autumn scenario with only convicts and engineers left at the end
Build the Generator in The Last Autumn scenario with only workers left at the end
Build the Generator in The Last Autumn scenario without anyone dying
Find generator parts meant for Winterhome and keep them
Build the generator in The Last Autumn scenario using neither Two Shifts nor Extended Shifts
Build the Generator in The Last Autumn with breaks between construction phases shorter than a day
Build the Generator with no damage from storms in Endless Mode
Build the Generator before the weather changes in Endless Mode
Build the Generator and reach day 100 in Endless Mode
Build a Generator with all construction faults in Endless Mode
Build a Generator with all upgrades and no construction faults