Expert Mode:
Find all fifteen dog tags and then complete the game successfully before saving. When you now start a game you will have the following extras but the enemies will be harder to defeat.
Ammunition:
25 Ultimate Launcher missiles
1,000 flame units
30 grenade rounds
50 shotgun shells
500 bullets
Extra Health:
3 Booster Shot B
5 Booster Shot A
5 MTS Vaccine
5 Recovery Unit B
20 Recovery Unit A