On de title screen,hold jump and shoot buttons for six seconds. There will be a chime to let you know that it worked. Hadouken: Once you have entered the code, Try a regular Hadouken like you would in Street Fighter with Ryu. You can also charge the Hadouken by holding the shoot button. This does not use the Weapon meter. Sei'ei Enbu: Press the Shoot and Swap 1 buttons at the same time. This will activate the Sei'ei Enbu, which uses the weapon meter. You cannot deactivate this once it is activated.