Bonus Weapons:
Competing scenario A in 2 ½ hours or less will get you the Rocket Launcher with infinite rounds.
Completing scenario B in 2 ½ hours or less will get you the Rocket Launcher, Sub-Machinegun, and Gatling gun.

Unlock Hunk Game:
Complete both scenarios for either character with an A ranking to unlock the Hunk game.

Unlock Tofu Game:
Complete 6 scenarios with an A ranking to unlock the Tofu game.