Unlock Vectorman Games
Vectorman: You must play games in the collection for 5 hours. You may also start the game with a save file on your memory card from the Sonic MEGA Collection to instantly unlock Vectorman.

Vectorman 2: You must play games in the collection for 7 hours

Vectorman 2 (Alterative way): You must play Vectorman more than once.

Unlock Super Sonic (Sonic R)
Finish The Game with all Chaos Emeralds collected and all the characters unlocked. To Unlock Hidden Characters you must collect all 5 SONIC COINS on each stage, and finish in the top three.