Here is my compilation of about 100 savegames.  Just unzip the savegames to the subfolder "SavedGames" in your Metal gear Solid folder.  Here are my savegames in no particular order.

1. Very Easy Skill level game and you get the MP5SD submachine gun with unlimited ammo (this is very handy because you not only have unlimited ammo but the MP5SD is also silenced)

2. Normal Skill Level game (sorry, nothing really special in this set except that I got a very good rank at the end)

3. Normal Skill Level game and you get the Stealth Suit

4. Normal Skill Level game and you get the Stealth Suit, Bandana, and Tuxedo.

5. EXTREME Skill Level game (WARNING, this skill level in NOT for novices, rookies, or anyone else that is not a MGS Master, and it sure as hell ain't for beginners)

6. Extreme Skill Level game and you get the Stealth Suit (this is also one the sweetest of all the savegame sets because I achieved the BIG BOSS rank at the end!) If you wanna see my BIG BOSS rank just load up the battle with Liquid and then beat the game from there.

7. Extreme Skill Level game and you get the Stealth Suit, Bandana, and Tuxedo.

Have fun!