When you shoot down the different jets in combat their alternate colors become unlocked. Each jet in the 18 missions has three alternate colors with the last being unlocked by shooting down the ace pilot. Below is a list of the location of each ace pilot (they don't show up on radar).

Unlock Mission 1:
F-5 - North of the Allied airbase.

Unlock Mission 2:
A-10 - North of the enemy airbase.

Unlock Mission 3:
F-16 - South of the westernmost radar station.

Unlock Mission 4:
Mirage 2000 - Northwest of the westernmost radar jammer.

Unlock Mission 5:
MIG-29 - South of the westernmost pumping station.

Unlock Mission 6:
F-14 - North of the northenmost group of enemies.

Unlock Mission 7:
TND-IDS - North of the solar tower.

Unlock Mission 8:
F-18 - Appears to the east after refuelling.

Unlock Mission 9:
F-15C - North of the center beach.

Unlock Mission 10:
RF-01 - Northwest corner of the map.

Unlock Mission 11:
SU-35 - 90 seconds left in the mission the ace will appear.

Unlock Mission 12:
F-2 - North of the Stonehenge base.

Unlock Mission 13:
F-15E - The ace appears in the east after clearing the radar balloons.

Unlock Mission 14:
F-22 - Northeast of the map.

Unlock Mission 15:
EF-2000 - Center of the map.

Unlock Mission 16:
F-117 - Northwest of the westernmost combat zone.

Unlock Mission 17:
F-15A - Northwestern corner of the map beyond the city.

Unlock Mission 18:
S-37 - North of megalith.

Unlock Expert Mode:
Beat the game on the 'Hard' difficulty setting.

Unlock Ace Mode:
Beat the game on the 'Expert' difficulty setting.

Unlock Three New Multiplayer Arenas:
Complete the game on any difficulty setting.

Unlock Tiger Striped F-43:
Complete the game on any difficulty and use the Special 'Continue' option.

Unlock X-02 Stealth:
In the 'Normal' difficulty setting get 'S' ranks on ALL 18 missions. Two alternate colors can also be unlocked by getting 'S' ranks on ALL 18 missions on 'Hard' and 'Expert' difficulties.

Unlock New Options

Complete all 18 missions to unlock:

Special Continue: play through missions with different aircraft

Free Mission: play any mission

Trail Mission, Scene Viewer, and Music Player.



After beating all 18 missions, load the game save containing the complete missions and then go to the Main Menu to access these new options.