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