HP
23,000
Gil
65,000 gil
Experience
57,000
Attack Power
154
Magic Power
63
Defense
4
Magic Defense
254
Behemoths aren't that hard to kill, if you're careful. There are a few things to remember. The first is that they only counterattack, so if you need a breather, just stop attacking. (They do actually attack on their own very occasionally, but it's usually not enough to matter.) They'll counterattack
Spells by weakening your entire party, and between their Magic Defense and immunities, it's a waste of time to try anyway. Physical attacks and summons are countered with physical attacks. Therefore, you can win easily by casting
Blink on everyone, then attacking and restoring
Blink as necessary.
Bersk will make the process faster, but could make it difficult to keep up with
Blink restoration.