Pandemonium

Finally, you have reached Pandemonium.
As you can expect from any final level,
the monsters here are the toughest. But
do not be afraid to run away if need be.
You should be fully prepared for the
Emperor right now, but not just yet. Head
down and go right. Go to the end, go up
and follow to the stairway. On floor 2,
just keep following and take the warp to
the next floor.
Go up then right. Follow to the bottom
to the warp. Now, floor 4 is where you
will spend most of your time on. There
are 4 doors and 5 good treasures. First
off, take the door on the left and head
up past many arches. The treasure at the
top is a Genji Gauntlet and is guarded by
a Zombie Borgan. Don't waste any magic
on him, because like the first Borgan, this
one is easy. Give the Genji Gauntlet to
Maria.
Keep making your way right. At the room
in the northeast corner is a false wall.
Take it to a small room with the strongest
weapon in the game, the Masmune. Give
that to Frioniel and the Xcalibr to
Lionheart. Note that the Masmune can
cast Haste11 on the party when used as
an item. Head back out to the main room
and take the door to the right of where
you are. Head to the center and grab the
Genji Helmet, which is guarded by a...
Tiamat! You might remember this from
Final Fantasy 1. This battle is tough, as
none of the elemental spells work on it.
Holy, Flare, and Ultima work on it, but
then again, so does Change. Another
way is to use the Masmune and the
Yoichi Bow (which casts Berserk3 on
all), and just lay the smackdown on this
beast. Heal when needed and give the
Genji Helmet to Frioniel. Now head back
to the main room.
Take the door furthest to the right and
follow up to the Genji Armor. This is
guarded by Satan. This battle will be
similar to that of the Tiamat, so just use
the same strategy and use the Masmune
and the Yoichi Bow. I found Satan to be
easier than Tiamat, but beware of Satan's
Flare16 spell. After a while, Satan will
die. Give the Genji Armor to Guy and
head back out the door.
Take the middle door and work your way
to the Ribbon, which is guarded by the
'Weapon' of FF2, Asteroth. Its spells are
strong, it has no weakness, and it has
about 7000 HP. Your best bet is to use
the Change spell, but if not, use the same
plan you used against Satan and Tiamat
with the Masmune and Yoichi Bow. I also
found that the Blood Sword works great
against this monster, as well as the others.
Give the Ribbon to Maria.
Now that you have all of the Genji
equipment and the Ribbon (which protects
against the statuses), head left to the
southwest corner of the room you are
in right now (with the Ribbon). Take the
warp and follow up and right to the next
warp. Go left and around to the next
warp on Floor 5. Make your way to the
northeast corner of Floor 6 and take the
warp.
Head down all the way and left all the
way. Before taking the warp, heal
Lionheart to his fullest, then use an
Elixer on Frioniel, Guy, and Maria. Also,
check to make sure that you have the
following equipment, just to make things
easier.
Frioniel Masmune Maria Yoichi Guy Rune Lionheart Flame
Genji Ribbon Diamond Diamond
Diamond Genji Power Diamond
Diamond -- Aegis Xcalibr
Dragon Diamond Genji Diamond
Elixer Bolt Elixer Blood
Blood Elixer Elixer Elixer
Take the warp and head directly up.
Note that there are monsters called
Giants that will leave behind Dragon
equipment. I don't recommend doing
this right now. Talk to the Emperor and
perpare for the fight of your life.
This is it. The Final Battle. To start off,
have Frioniel and Lionheart switch their
weapons to the Blood Sword. Have
Frioniel use the Masmune and Maria
use the Yoichi Bow. The Emperor's
attacks can take as much as 2000 HP
way from you. Also watch out for his
Meteo1 attack. Have Maria in the 2nd
round use Ultima, Frioniel and Lionheart
attack with the Blood Swords, and Guy
use Holy8.
If you don't have the Blood Swords, then
the fight will be tougher. Just keep up
the attacks, and have Maria or Guy
heal when needed. If your MP/HP gets
too low for Cure, use the Elixer. Keep
up the attacks and the Emperor will soon
fall. Watch the ending and enjoy.