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