Air Fortress

SZUPKGVG        Infinite lives outside fortress 
PAVPKZLA        Start with 1 life
TAVPKZLA        Start with 6 lives 
PAVPKZLE        Start with 9 lives
APKZNGIA        Pick up double bombs 
AAKPSTPA        Infinite Beam Bullets
GXKKSIST + GXNKNIST     Don't take damage inside fortress 
YYNXUZGV + YNEZEZGV     Pick up extra energy 
XZSOXXPZ + PASOUZYA + VASOKZSA  Start on level 2
XZSOXXPZ + ZASOUZYA + VASOKZSA  Start on level 3
XZSOXXPZ + LASOUZYA + VASOKZSA  Start on level 4
XZSOXXPZ + GASOUZYA + VASOKZSA  Start on level 5 
XZSOXXPZ + IASOUZYA + VASOKZSA  Start on level 6
XZSOXXPZ + TASOUZYA + VASOKZSA  Start on level 7