How do you get the UFO ending on grow island

Grow Island

UFO ending:
1 Steering Wheel
2 Pick Axe
3 Logs
4 Computer Chip
5 Battery
6 Bolt
7 Burner
8 Smokestack


Regular Level Max ending:
1 Bolt
2 Pick axe
3 Logs
4 Steering Wheel
5 Smokestack
6 Battery
7 Computer Chip
8 Burner
U.F.O Ending

1. Aeronautics, Marine, Automotive Engineering - Steering Wheel
2. Civil Engineering - Pick Axe
3. Architecture - Logs
4. Computer Science - Chip
5. Electrical Engineering - Battery
6. Mechanical Engineering - Bolt
7. Applied Chemistry - Burner/Candle
8. Environmental Engineering - Smokestack