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