Falls du den Kampf meinst, einfach mal was GameFAQs schreibt, ist zu schwer das aus dem Kopf zu machen.

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~* Imperial Library *~

   Completion Conditions:                   Game Over Conditions:

 - Party Escapes                            - Party Member Left in Room
 - Enemy Destroyed                          - Party Member Caught in Door
                                            - Party Destroyed
 Enemies:

 - Gargoyle (Lv22)                          - Gargoyle (Lv22)
 - Gargoyle (Lv22)                          - Gargoyle (Lv22)
 - Evil Mage (Lv28)                         - Evil Mage (Lv28)
 - Evil Mage (Lv28)                         - Evil Mage (Lv28)
 - Golem (Lv34)                             - Golem (Lv34)
 - Golem (Lv34)                             - Golem (Lv34)
 - Golem (Lv34)                             - Golem (Lv34)

If you want the Mission Complete here you're going to have to destroy all the 
enemies, which is easier said than done.  Take three of your four party 
members and attack one Gargoyle each, with your fourth (preferably your magic 
caster) have him.her walk over and step on the gate device.  Now start 
charging heal/support spells.  Immediately send everyone out and begin picking 
off the Evil Mages (but don't attack until you're through the door otherwise 
your party won't be able to get past you, try using the MOV command to get out 
before actually choosing to attack.)  The mages must die as a priority, their 
spells will really drain you, once all the mages are gone you can relax a bit, 
heal your party and have Viktor and Yayoi snipe some of the enemies over the 
edge of the walkway.  Wait from the rest of the enemies to come to you and 
take them out as they arrive, but by this point you shoulnd't need any real 
strategy, it's the mages that will drain you if anything.  Also one thing to 
watch out for is the trap damage floor, that red stuff appearing at the top 
will deal 10 damage per round to anyone standing on it, be sure one of the 
characters that goes through the door stands on the alternate switch so you 
can get your magic caster out of the room to safety.  Again, a Mission 
Complete results simply from defeating all enemies.

 ~* End of Battle *~

Even after the battle is over the damage floor remains so get out of there 
quickly and save your game.  Leave the tower and you'll automatically be 
brought into an event.  After the scene you'll receive 'Letter to the 
President.'
und noch eins .__.

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The final room has an ominous look to it but we will investigate anyways. 
Speak to Viktor and he will show the group how to get past the door. Once you 
are inside look for the book called "Secret Treasure Mysteries". It is on the 
top left area and it tells you the secret of the three Crystals that were 
stolen. Afterward Slayn will get to choose books to read. Read "Art and 
Science of Time Bombs" and Viktor will learn how; read the Fox-Tribe Language 
to learn the language of the Fox-Tribe; Read "Elixyrs for Everyone" so Viktor 
can learn to create the Special Elixyr; Read "Advanced Magic for Eggheads".  
After reading four books, the statues in the room will come to life.

==============================================================================
|                                  Battle 17                                 |
==============================================================================
| Complete Conditions                        Game Over Conditions            |
| ====================                       =====================           |
| Party Escapes                              Party Member Left in Room       |
| Enemy Destroyed                            Party Member Caught in Door     |
|                                            Party Destroyed                 |
|                                                                            |
| Enemies                                    Reinforcements                  |
| =======                                    ==============                  |
| Level 22 Gargoyle x4                       None                            |
| Level 28 Evil Mage x4                                                      |
| Level 34 Golem x6                                                          |
|                                                                            |
==============================================================================

==========
|Strategy|
==========
This is a really easy battle. First, start off by killing the four Gargoyles 
in the room. After that have Slayn use Dash and stand on the door switch. 
Viktor is slow and should be moving outside while Yayoi casts cure for the 
inevitable damage that you will take. Since Hugh is the other Speed Demon, 
have him Dash and attack the Evil Mages. You will only be able to reach three 
of them because the fourth one is blocked by the Golems that will be coming up 
the stairs. Viktor can go to the second switch and after he has reached it 
Slayn will be free to move. The Golems are strong but because they are in a 
straight line it makes them easy prey for Thunder Magic. Cast the Co-Op spell 
Thunder and use it to decimate the Golems. A level 5 can take them out easily. 
After that, have Viktor use magic to finish off the last Evil Mage while Hugh 
waits for the remaining Golems to get closer. After the battle, leave the 
Library. After leaving you are met by Granford's Soldiers.