Easy Beating Heavy Cruiser
This may sound crazy, but I've done it, and it works. It works very well. Use
the A-10 to attack the heavy cruiser. But, you must use the FAEB (Fuel Air
Dropping the FEAB right onto the big planes knocks out nearly ALL of their
target points. You can knock out the four support cruisers with one or two bomb
drops. The carrier still takes 3 or 4. The only hard part is to get the cockpit
of the carrier, since the A10 is so slow. Don't forget to use Allied Cover, it
Beat Weapons Of Mass Destruction
The easiest way to beat this level is to pick a SU-33 with the Multi-lock air-to-air missiles. When you come up against the enemy battalion switch to your multi-lock missiles and shoot them down until Avalanche, Windhover, Snake pit, and Sky Kid arrive after that just use your allied attack and help them out (if you let them do it on their own you'll run out of time, so help them).
To do a high 6 you must hold the L and R trigger
at the same time and turn. For more practice you
can go to the tutorial and it will show you.
Beating Heavy Cruiser
On the mission where you have to shoot down the big flying aircraft carrier and
the support planes, you need to use the "Allied Cover" to keep the enemy planes
from shooting you down. After all the enemy planes launch, fight them for a minute
and then call in the allied cover to blow them all out of the sky. Once they're
gone, you can shoot the big planes much easier.