Level skip:
Hold L + R on controller one
and press Start on controller two.
Final level item:
Hold L + R on controller one
and press Y on controller two.
Full shields:
Hold L + R on controller one
and press A on controller two.
Restore generator:
Hold L + R on controller one
and press B on controller two.
Weapon power-up:
Hold L + R on controller one
and press X on controller two.
Full ammunition:
Hold L + R on controller one
and press C on controller two.
Full map:
Hold L + R on controller one
and press Z on controller two.
