The boss is (I think)
Coral-fueled SEA SPIDER
What loadout did you use?
I used
Plasma blade and pilebunker left hand. Laser rifle and vertical missile launcher right side. Reverse joint feets.
I feel I did not "get" this boss. The only reason I was able to win was because pilebunker charged damage output was insane. Everything else felt like it was tickling the guy.
- Twin gatling guns
- Pile bunker in left weapon bay
- I think I was using a laser cannon on the right shoulder, but it might have been a weapon bay bazooka
- Heavy biped legs
- Same FCS & boosters as Balteus fight
Tried to use a bazooka & cannon in my hands initially, but figured out fairly quickly that I was doing best with the gatling guns.
Edit: Have the game up right now, so I thought I'd give a more detailed rundown of my build:
Body:
- Head: KASUAR/44Z
- Core: DF-BD-08 TIAN-QIANG
- Arms: DF-AR-08 TIAN-QIANG
- Legs: DF-LG-08 TIAN-QIANG
Power, FCS & Expansion:
- Booster: ALULA/21E
- FCS: FCS-G2/PO5
- Generator: VP-20D
- Expansion: Assault Armor
Here's a few screenshots of how it looks (with different weapons than what I used in the boss fight):
ShowShowShowDirect-fire plasma misses, plasma rifle, songbird and grenade launcher. Medium biped build. Plasma is pretty effective since the boss will often stay still, so the lingering plasma damage will eat away at its health/ACS. Probably would have been good to get the tetrapod legs with all the heavy weapons, but I didn't had the chance to purchase them yet.
In general, I had to stay pretty vertical. The melee attack is quite nasty but not too hard to dodge if you're in the air. The beam attack is also relatively easy to dodge with verticality. If you're in the air, you drop to the ground once the beam is 50% charged or so, and vice-versa if you're already on the ground.
Still, took a lot of attempts. Wish I had the pile bunker.
It went pretty quick. The plasma is a bit less effective, but the boss isn't all that maneuverable in the air.
The first time I went against it I had a tetrapod with laser cannons and gatling guns, which ate absolute shit and couldn't move fast enough to escape the stomps. Then I came back with a lightweight reverse joint with a shotgun, pile bunker, and whatever missiles fit after that and casually rolled over it first try by just being hyper aggressive and sticking to it.
I beat this one with a floating quad missile platform: two hand launchers, 8x vertical shoulder, 10x shoulder. Spending most of my time high in the air was the key to success.