Heatseeker Cheats

To unlock the Top Secret plane and "The Big One" weapon pack, just complete both the Pilot and Ace bonus objectives for the final mission (Mission 4.5-Final Count Down).

"The Big One" weapon pack is the fourth weapon pack for the Top Secret plane. This weapon pack, also, includes a nuclear armed cruise missile, the A-SLAMR. This weapon, however, does not recharge after being fired.