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