The game was just updated with version 0.73a

• New unlockable soldier class is added - engineer. This class focuses on buffing and supporting the squad with different types of drones
  
• Third final mission of the campaign is added
  
• A difficulty rebalance. Most of the enemies now scale their damage and health, according to the progression of the game. This will affect mostly later stages of the game, now enemies will be more durable and threatening than before. Earlies stages of the game remain the same mostly. Additionally, an armor values of almost all armor items are slightly decreased
  
• Increased area of effect for flamethrower and lightning cannons
  

If you like the game and how it's developing, and want to support it, tell about it your friends or write a review! This will help a lot.

Also be sure to check out official Discord server:
https://discord.gg/PmyMqVh