New Game +
Finish the game once, and save your clear game file.
Load the clear game file and play again, but this time, you get to keep previously earned Karma Ring, Mantra/Skill and Linkage.
Hard Difficulty
Either by loading a clear save from the first Digital Devil Saga, or by completing Digital Devil Saga 2 you can select your difficulty of either Normal or Hard. Hard mode makes it harder to escape, (3/10ths the chance of normal mode) enemies hit you for 1.5 times more damage, enemies have a 1.5 times higher critical hit ratio, you hitting an enemie's weakness results in 2 times damage, and allows you to face an extra secret boss.
Unlocking Heat
Inorder to unlock the characater Heat, you got to make the right choices through out DDS 1 and 2.
Note that if you do choose to Unlock Heat in DDS2, Ronald would be replace
In DDS 1:
- When Heat decide to fight you in Coordinate 136, pick the first choice
- After defeating Varon Omega at Brute's Base, pick the first choice
Beat the game, after the credit roll, save the game when it ask you to.
Start DDS2, when ask to load save from DDS1, load the clear data.
In DDS 2:
-At the EGG factory, pick the first choice.
-After defeating Vitra, pick the first choice.
