Because of the system of this game, the best weapon to defeat this stage with no check point and no skill, especially in ACE difficulty is MGP of SU-25. With your MGP and your machine gun, you can sink enemies' large ships like carrier and two cruisers easily by just aiming and firing. In addition, watch out the enemies' AA firing so stay in low attitude as low as you can is a good idea to avoid most of AA firing(20-100 is best). In the final moment enemy's last cruiser has a great fire power so I have to use my MSL to destroy four TGT CWIS or the mission will be failed.
In the end, watch out enemies' AA missiles, though it is seems be very slow but if you have a wrong time and wrong way to attack, you will be easily be hit and going down.
Ace Combat: Assault Horizon Statistics For LEE SAIONJI
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