Here is the full list of all 30 Iron Sky: Invasion achievements.
Destroy 50 Alberich ships.
Complete all Russian side missions.
Purchase all upgrades for the Dundee bomber.
Destroy 10 Hunding ships.
Complete all US President missions.
Destroy 100 Rheingold ships.
Acquire the Banzai heavy fighter.
Destroy the Wolfram capital warship.
Destroy the Walther capital warship.
Destroy the Tannhäuser capital warship.
Destroy 10 Brünnhilde ships.
Repel the meteorblitzkrieg.
Acquire the Canadarm heavy bomber.
Destroy 20 Hanebu IV ships.
Safely escort Renate to the moon.
Collect 100 salvage.
Acquire the Spitfire frigate.
Destroy the Herrmann capital warship.
Destroy the Heinrich capital warship.
Destroy the Biterolf capital warship.
Acquire the Xerg light fighter.
Complete the tutorial part of the game.
Destroy all drones in the Shooting Range in less than 30 seconds.
Detonate the Überasteroid.
Destroy the Götterdämmerung.
Complete all Indian side missions.
Collect 500 salvage.
Destroy 300 Walkyr ships.
Destroy 20 Wotan ships.
Purchase all upgrades for the Korean light fighter.