Remind me which boss? What does he look like
The last boss is Osmund Saddler
Albert Wesker is the last boss
Wesker.
All you have to do is beat every chapter on hard, Not including operation Javior 6,7 (Krauser's mission's)
you can save it when you finish a chapter
To beat Krauser in Resident evil 4 you need to keep shooting with your magnum.But unsing your knife when he is on his knees is okay too.
Near the end of chapter 4-4.
play it
beat all the scenarios including decisions decisions, then you've did it
beat the hole game
beat the game on normal
beat the main game