Gallery Unlockables
In order to get 2-1 Mode, you'll have to beat the game in regular mode. Then all you have to do is conquer it again, only this time on 2-1 Mode.
Number of Continues
The number of continues increases with the total number of hours.
Unlockable - How to Unlock
2 Continues - Game Time of 0:00:00-0:59:59
3 Continues - Game Time of 1:00:00-1:59:59
4 Continues - Game Time of 2:00:00-2:59:59
5 Continues - Game Time of 3:00:00-3:59:59
6 Continues - Game Time of 4:00:00-4:59:59
7 Continues - Game Time of 5:00:00-5:59:59
8 Continues - Game Time of 6:00:00-6:59:59
9 Continues - Game Time of 7:00:00-7:59:59
Free Play(Unlimited Continues) - Game Time of 8:00:00 or more