The era of the robot masters is over. It's time for the multiple changing doppleganger robots to push forward and break into the mysterious robot repair center and complete the mission and recover the advanced technology. Of course, you may need to change your body type between a the hulking bruiser and the thing infiltrator to take each step through the Fantasy Robot World.
Use A,S,D to attack. Use Q,W,E to switch into your different robot version.