how the hell do i kill the lobster handed gardion none of the spells tuch him//????help

there are 3 parts to him
1. he will throw fireballs at you when you are far away, dodge them and then he will try and grab you with his tongue, dodge that then he will start to flash red, go use magic blast on him
2. he will send zombies at you, after that he will flast red, use magic blast again
3. now for his last hope, he will try and mash you with his claws, easily walk to dodge the hits, after a while he will cock his head up and turn red, once again, use magic blast

------------------------------XEL'LOTATH PATH----------------------------------
First Battle: After the Greater Guardian casts its green bolts on you, move out
of the way and then attack back by casting a three-point Magickal
Attack of an alignment STRONGEST against the Guardian's alignment.
Keep doing it until he move the green barrier closer to you.

Second Battle: The green barrier got closer and he now casts 3 zombies to go
after you, this is easy, after the THIRD ZOMBIE appear, cast a
five-point Magickal Attack spell of an alignment STRONGEST
against his. Keep doing it until he move the green barrier
closer between you and him.

Third Battle: He will shoots a powerful green bolt at you from above, keep
running/walking out of the way until he stops for a while, this
is a good time to cast a three-point Magickal Attack on him, and
keep running from the green bolt he shoots at you until he tires
again. Do the same process until you defeat him.

---------------------------------ULYAOTH PATH----------------------------------
First Battle: The Guardian will shoots three energy or blue balls at you.
Run around and avoid being hit by the balls, or you can shoot
them off if you want to. When the Guardian rest, perform a
Magick Attack of three-point with Xel'lotath, do this a couple
time until he perform the next battle.

Second Battle: He will now raise the deads, this is just the same battle
strategy as the one on the Xel'lotath path, cast a Magickal
Attack of five-point with Xel'lotath, only do this when the
third zombie fully appear, keep doing this until the guardian
make his next move.

Third Battle: This is even more dangerous, the guardian uses its feet to
squash you like a spider...I wanna see Eight Legged Freaks,
anyway, run around until he stops stomping, this is the good
time to cast a three-point Magick Attack with the Xel'lotath
alignment.

-------------------------------CHATTUR'GHA PATH-------------------------------
First Battle: This path against the guardian is the toughest! The guardian
shoots out energy balls and if you get too close to the enemy,
it will use its tongue to damage you or its claws too. After
he stop shooting energy balls, quickly perform a Magickal Attack
with a three-point Ulyaoth, do this a couple times until he plan
out his next battle strategy.

Second Battle: Same second battle as the one in the Xel'lotath and Ulyaoth
path, after the third zombie show up, cast a five-point
Magickal Attack with the Ulyaoth alignment, keep doing this
until he begin his final battle.

Third Battle: The guardian will now squash you like a mosquito with its
huge claws. When he get tired from doing this, this is a good
time to perform a Magickal Attack of three-point with the
Ulyaoth alignment, do this a couple times to end its life.

Take the essence and this ends the chapter. Watch the cut-scene.