Here is the full list of all 30 Iron Sky: Invasion achievements.
Destroy the Götterdämmerung.
Detonate the Überasteroid.
Destroy 300 Walkyr ships.
Destroy 10 Hunding ships.
Complete all Russian side missions.
Destroy 50 Alberich ships.
Acquire the Banzai heavy fighter.
Complete all US President missions.
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 20 Wotan ships.
Destroy 10 Brünnhilde ships.
Destroy 100 Rheingold 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.
Complete all Indian side missions.
Collect 500 salvage.
Purchase all upgrades for the Korean light fighter.