Defeating Frankenstein's Monster
Switch to Sundano and force every other hunter not to attack. Do not
attack Frankenstein. Make sure your MP bar is high (attack some of
the experiments to raise it if needed) and back away from
Frankenstein. If no one is provoking him, his arms will slump and he
will raise an electrical generator over his head and eventually
throw it. While it is still over his head, he is completely
vulnerable to attack. If you can see his shoulders slumping,
immediately summon the Forest Spirit and the lion should eventually
attack the vulnerable monster, knocking him down and dealing great
amounts of damage. Followed with some combo attacks, you will
severely deplete his HP. Before he gets up, back off quickly or else
he will attack you. Wait until his shoulders slump and repeat the
summoning and the combos. He should die quickly.

Frankenstein's puzzle
All 4 hunters are locked in separate rooms. Cycle through all the
characters until you have all their circular chambers cleared. The
prisons represent the PlayStation2 controller. Whoever is at the
topmost cell is Triangle, at the right will be Circle, the bottom is
X, and the left will be Square. The picture designs on the wall
represent the shapes of the buttons. Move the hunters onto their
listed buttons. The crossbow is to throw you off; ignore it.

Defeating the Sea Creature
Using Jeager (the scientist), dodge the water balls that the Sea
Creature shoots and wait for it to leap out of its puddle. Quickly
run over and press Square, electrocuting him. He will be stunned for
a little while, during which time you can use combo attacks to beat
him up. He will return to the puddle. Wait, dodge, and repeat again
until he is defeated.

PS2 Cheats for McFarlane's Evil Prophecy

McFarlane's Evil Prophecy cheat codes

McFarlane's Evil Prophecy cheats