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