- Available from the start.
- Level 2 (Dual MG): Destroy 40 infantry units.
- Level 3 (Minigun): Build 3 ammo stations.
- Destroy 30 ground enemies.
- Destroy 60 ground enemies.
- Destroy 120 ground enemies.
- Build 10 Advanced Towers
- destroyed 20 units with airstrike
- destroyed 50 units with air strikes
- Anti-Ground, or Anti-Ground/Air if Level 2.