3 discs but I only used 2 ?! Where did I go wrong ?

#1 Posted by MrAuthority (72 posts) -

How do I get to use the third disc ? I some how completed the gonly only using 2 discs and I really want to see what's on the third disc ? 


any insight on how I can use the third disc would be great.


thank you

#2 Posted by fisher289 (332 posts) -

The third disk is the multiplayer disk