Unlike its predecessor, Advance Guardian Heroes allows players to move smoothly towards and away from the screen, as opposed to switching between 3 planes.

Properly timed use of the barrier spell allows a player to reflect projectiles and magic (in a visual effect reminiscent of Mischief Makers' Marina Liteyears throwing a laser or lightning bolt back at its source), or stun enemies who attack in melee.

If the player agrees to the sinister figure's conditions, then the character is brought back to life in a state referred to as "Devil Mode" that is unable to take damage (although still able to be knocked down and flung around) for the next six minutes, before the sinister figure reappears and destroys the character, resulting in a game over screen.

Throughout the game, defeated enemies will drop crystals of varying sizes and colour, that act as the experience points.

At certain points, the player has to fight the heroes of the previous game, and upon defeating them, they will give up their souls, which will increase one of attributes by 10.

The group was divided, with Nicole, Serena, and Valgar joining the Sky Spirit, and Han and Genjiro refusing.

Randy escaped back to earth on his own, leaving Han and Genjiro to fight a losing battle against their former comrades.

The few remaining resistance forces call upon the power of the Undead Hero once again, with one young soldier giving up his body to serve as its vessel.