Tier 3 & 4

Tier 3:

Coal Power:

To unlock Coal Power you will need the following:

• 150 Reinforced Iron Plates,
• 50 Rotors &
• 300 Cable

Vehicular Transport:

To unlock Vehicular Transport you will need the following:

• 25 Modular Frames,
• 100 Rotors,
• 200 Cables &
• 400 Iron Rods 

Basic Steel Production:

To unlock Basic Steel Production you will need the following:

• 50 Modular Frames,
• 150 Rotors,
• 300 Concrete &
• 1000 Copper Wire 

Tier 4:

Advanced Steel Production:

To unlock Advanced Steel Production you will need the following:

• 200 Steel Pipes,
• 200 Rotors,
• 1500 Copper Wire &
• 300 Concrete

Improved Melee Combat:

To unlock Improved Melee Combat you will need the following:

• 25 Rotors,
• 50 Reinforced Iron Plates,
• 1500 Copper Wire &
• 200 Cable

Logistics MK3:

To unlock Logistics MK3 you will need the following:

• 200 Steel Beams,
• 100 Steel Pipes &
• 500 Concrete

Hyper Tubes:

To unlock Hyper Tubes you will need the following:

• 300 Copper Sheets,
• 300 Steel Pipes &
• 50 Encased Steel Beams