Biohazard EXTREME
You get to watch some cool concept art and unused alternate costumes and stuff if you beat it! But of course, Capcom, being the cheap bastards that they are, didn't let you view the Congratulations mode from the main menu. So you have to beat Invisible Enemy mode every time in order to see it again.
Or just save at the last save point in the game and don't save afterwards. biggrin
and i did beat Real Survivor once though. lol it was tough and i hated Forrest.
At the end of Hard Mode though i must've conserved way too much because i had over 100 Handgun ammo and too much shotgun shells lol