Here is the full list of all 24 Kaiju Wars achievements.
Congratulations on the election, Your Worship
Complete Act 1
Complete Act 2
Complete Act 3
Complete Act 4
Complete Act 5
Complete the Campaign
Win a mission on Freeplay
Win a mission on Hard
Name a kaiju
Gain a Researcher
Acquire an Ace unit
Complete all upgrades for ONE Ace unit
Create a mission using the Map Editor
Upload a map-editor made mission to the Steam Workshop
Play & rate a Steam Workshop mission
Defeat Hairy Armadillo 30 times
Defeat Hell Turkey 25 times
Defeat Big Donk 20 times
Defeat Duggemundr 10 times
Defeat ??? 5 times
Have Dr. Wagner die
Add all project cards to your archives
Earn ALL 241 medals