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