Tried building a transformable Megatron tank using just the pieces from the Battle for Energon set but ended up using more. Very fragile as is with all the hinges, I'll superglue it all once I'm 100% satisfied with the design.
ROBOT MODE
TRANSFORMATION
1. Straighten the arms
2. Flip up the thumbs and fold down the claws
3. Fold down the dual arm cannon
4. Fold back the head
5. Unwrap the lower leg guards
6. Fold back the "wings" flat against the back of the legs
7. Rotate the legs around 180 degrees
8. Fold down the tank turret
9. Fold the legs against the back to emprison the head between the calves
10. Rotate the feet 180 degrees and place them perpendicular to the ground to form the thrusters
11. Close the cage over the head
12. Close the wings
TANK MODE