Hello, Mister SEARCH button.

http://forums.eyesonff.com/search.php?searchid=668132

In short, either take out the Negator to allow you to use Magic, yet takeall of the Crawler's most punishing attacks, or play it safe, and cure yourself by Potions and chipping the HP away. If you do destroy the Negator, a countdown timer starts for the Crawler's most powerful attack. Use an Aeon's Shield technique to block.

Too lazy to write out a full, turn by turn thesis for you. Endless. can do that. Not the REAL Endless that happens to be Site Staff and Former CK, but the fake, "Lone Forest Ranger" Endless..