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