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