Lethis - Path of Progress achievements

You’ve finished building the Zeppelin Hangar during autumn.

You've exported a total of 100.000 units of silk, all cities together.

You completed the campaign on “easy” difficulty or harder.

You completed part four (Chapters XVI to XX)

100 houses withered by time, all cities together.

You completed the epilogue (Chapter XXVI)

You Completed the campaign on “normal” difficulty or harder.

You built over 10.000 box tiles of road, all cities together.

You’ve built 25 steam-powered buildings during one game.