Full list of all 21 Vehicle No. 4 achievements.
The base game contains 12 achievements, and there are 2 DLC packs containing 9 achievements.
Survive wave 30 at difficulty 5
Survive wave 40 at difficulty 5
Win the game at difficulty V with only buying weapons with the base category Physical
Survive until wave 20 with only buying and using weapons of rarity Basic.
Win the game at difficulty V with only buying weapons of one type
Win game with Hugo on difficulty 3 or higher.
Win game with Arthur on difficulty 3 or higher.
Win game with Cindrix on difficulty 3 or higher.
Win game with Esmeralda on difficulty 3 or higher.