In this appendix we will describe in detail the division of missions into difficulty categories.
Squad size: 4
Enemy count: around 7 enemies.
Possible rewards:

• Rookies
  
• Reduce Contact Cost
  
• Loot
  
• Heavy Weapon
  
• Grenade
  
• Utility Item
  
• Ammo
  
• Vest
  
• Superior PCS
  
• Superior Upgrade
  
• Elerium Core
  
• Ability Points
  
• Data Pads

Squad Size: 6
Enemy Count: around 12 enemies.
Possible Rewards:

• Supplies
  
• Intel
  
• Alloys
  
• Elerium
  
• Avenger Power
  
• Facility Lead
  
• Remove Doom
  
• Meld (from PEXM)
  
• Savage Items related stuff

Squad Size: 8
Enemy Count: around 25 enemies.
If the mission has a timer, it's increased by 8 turns.
Possible Rewards:

• Scientist
  
• Engineer
  
• Soldier
  
• Captured Soldier
  
• Some modded types of soldiers the author does not use (Allies Unknown, T-Dolls)