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