The Gil Cave

In here, there's a turtle to punch. This sidequest can only be done in the second world. Basically, all you get from it is a lot of Gil, and the only thing you have to do is punch a turtle.

I shouldn't forget to mention that this turtle is an undead demonic testudine with the strength of a thousand evil armies and almost impenetrable defenses. It's also poisonous. Most parties won't be able to defeat it, and even if you followed everything I've told you so far Gilgame is an extremely powerful opponent which requires you to utilize special tactics to take him down.

Should you want to travel between Val Castle and X-Death's Castle, you could take the Wind Drake and make a detour over Valley of Dragons and Kelb. However, a more direct route takes you through Gil Cave, of which the entrances lie east of Val Castle and south-west of the Big Bridge. Here, only Groundpedes appear; giant centipedes which attack with physical attacks and Earthquake, an multi-target Earth-elemental attack which you can avoid with Float. L4 Qrtr can be used to quickly put a dent in all Groundpedes' HP, then finish with whatever.

In the middle of the path under the mountains is a pathway downwards which eventually curls upwards to a door. There's a bit where you can't see your lead character, but as soon as you can see him or her again, every tile will award you Gil! However, only the sun is free these days and for every step you take there's a chance Gilgame will attack you. He'll only attack you when you pick up Gil, so on the way back he won't make a showing.

Gilgame	Type	Level	HP	MP	Gil	EXP	Speed
	Undead	57	32768	8000	5000	0	66
	Strength	Attack Mult.	Magic Atk.	Evasion	Defense	Mag. Def.	Mag. Evade
	115	13	90	40	40	55	90
	Stolen Items			Dropped Items
	Common: Tonic Rare: Potion			None
	Command Immunities			Elemental Immunities
	Catch, Control
	Elemental Absorb			Elemental Weakness
	Blue Magic			Status Immunities
	None
	Strategy
	Gilgame is fast and uses physical attacks, and counters every attack twice, sometimes adding Darkness and Poison. If you beat him, he'll kill everyone not floating in retaliation. Up your evasion, put up Golem, haste yourself up, and use as many Ice-based attacks as you have available.

Gilgame's AI script is simple and effective. He's fast like greased lightning and attacks physically every turn. When damaged by whatever, he'll counter with !Turtle, which deals the same amount of brutal physical damage and sets Darkness and Poison. He counters twice. When defeated, he'll use an Earthquake attack which deals around 3500 damage to the entire party. If you're not Floating, you die. Cast Float beforehand, I suppose.

The strategy here depends a little on luck. His weakness is Ice, and that's what we'll have to exploit in order to defeat the thing. Boosted Ice3 spells and Ice3 spellblade effects are your best options on the offense; Requiem and L3 Flare also deal damage though quite a lot less. The key to your protection is the fact that whatever Gilgame is throwing at you, however, intimidatingly powerful, are simply blockable physical attacks. Also, Gilgame's fast and will decimate you if you're loitering, but his true strength is his dual !Turtle omni-counter. This means that you can relatively safely boost your own strength in the meantime.

Equip Hunting Knifes and Elf Cloaks; you've got two of the former and three of the latter if you picked up everything so far (assuming this is the last thing you do in the second world, which it should be). Evasion is far superior to defense in this battle. The Blink spell and the Ninja's !Twin ability both grant the effected character the prospect of dodging the next two physical attacks, and Golem's Earthen Wall stops his attacks as well. With Golem, a few images and your own enhanced evasive abilities, Gilgame will get in precious few hits.

Set up the above and cast Haste2. Now, have every character capable of dealing significant damage do so. If a character is not capable of making a large impact (say, you've made a Time Mage with !Summon to support the party) just use Defense rather than deal a little damage, as Gilgame's counterattacks aren't worth it. Keep healing, reviving and damaging and you should be able to outpower Gilgame, if you have some luck on your side.

Note that once you leave the area behind the door, the tiles reset. Again, the first tile contains 10 Gil, the last tile contains 40960 Gil and Gilgame may appear whenever it feels like it. Infinite amounts of money, sure, but one trip gets you 81910 Gil which already is a all the Gil you'll be spending in the future so there's really no good reason to do it all again.