It's not very big. the game is still wonderful. but... Spoiler:
The Reident Evil 3 scenario isn't RE3
All of it is from Outbreak. And I hate that. nemesis' voice is messed up and is only in the third part. The level is still fun but it's not Resident Evil 3. It was disappointing. I still had fun however. The first two scenarios are a blast and the final one doesn't disappoint but the RE3 one made me sad.