Thexder
Platform: MSX
Region: Japan
Media: Cartridge
Controller: Keyboard
Genre: Shooter > Platformer 
Gametype: Undefined
Release Year: 1986
Developer: Game Arts 
Publisher: Game Arts 
Players: 1
_________________________
A platform shooter from Japan, Thexder offers many levels and diverse enemies that gradually increase in difficulty.  You pilot a Battletech-style robot capable of switching from a 'mech into a jet at any time.  Your weapon auto-aims, but uses up a fixed amount of rechargable energy; if you run out of this energy, you'll have to wait a few seconds before you can fire again.  Your 'mech also contains a shield that can be activated to protect you from harm, but this lasts for a few seconds and uses up some of your life energy.
 
http://www.mobygames.com/game/msx/thexder