Resident Evil 3: Nemesis
Get every Epilogue File:
Beat the game 8 times to get them for all the characters. In order of unlockability for each time you beat the game, they are: Jill Valentine, Chris Redfield, Barry Burton, Leon Kennedy, Claire Redfield, Sherry Birkin, Ada Wong, and Agent Hunk.
Defeat him up to 6 times in Hard Mode to get these items. In order for each kill, they are: Eagle Parts A, Eagle Parts B, First Aid Spray Box, M37 Parts A, M37 Parts B, another First Aid Spray Box, and finally Infinite Ammo for One Weapon.
Get the Infinite Bullets Box:
After you beat the game, play from that Next Game save and beat Nemesis all 7 times you fight.
Get Every Uniform:
Beating the game with an 'A' rating will unlock 5 uniforms. Getting a 'B' will give you 4, all the way down to 'E', which gives you one extra uniform.
Get Jill's Diary:
You must find and read in the correct order. So the file that fits in the 8th File slot must be read after files 1-7.
Thanks to Revolution readers James Matheson, Robert MacNichol, searing_heat, and carey457!