Armored Core 6 Sea Spider boss guide, best build, how to dodge all attacks (1A-13 Sea Spider tips)

After about 100 attempts I decided to finally look up a guide. Last attempt broke me when he did 10,860 damage in one attack.

I gave this guy a pretty solid attempt on my own and got him to like 50% health at best and decided to look up this vid. Even with this build and know his attacks better it still took me another 15-20 tries. Insane how difficult they have managed to make these bosses in this game

I legit have been on this game all day today I’ve tried this boss for on and off for 8 hours. I looked up this guide and it was the extra boost I needed. I had one plasma rifle and a sword and got em almost 10 times. Thank you so much this felt so good beating this especially cause I was so close everytime.

Terminal Armor allows you to survive the blade spin attack. So long you have one or two repairs remaining otherwise it will leave you at 1 hp which is very suboptimal

Great guide. I like how you broke down the stages of the fight in detail.

This guide was great, it didn’t use a build that felt op, but gave you a fair bit of damage along with still having to learn him. Great job!!!👍👍👍

So here is a funny build, 2 bazookas, 2 grenade cannons, tetrapod, stagger city, stay airborne as much as possible, trivializes stage 2

Did this with some of the body parts as shown but used an all-missile build and only those that shoot front and not upwards. When I heard the charge move, no matter which one it was, I hit my jets into an adjacent direction and always upwards. For the second phase I stayed up in the sky as much as possible and just kept up the barrage. It worked so well I only had to use a single med kit but I could've done without it.

Second phase with tetrapod legs is pretty lenient. You basically just hover near it and avoid the absurd ground damage it pumps out.

i struggled a lot until i tried a lightweight max speed build with reverse joint legs, just circle strafing without dodging, i avoided most of his attack, still have to dodge the charged laser attacks and melee (i dodge backward), the reverse joint high jump really help with the laser attack that sweep from one side to another (it does follow you if you don't ascend fast enough) and the spin attack

pro tip: stay underneath him in phase 1 and strafe around him in a circle, then you never get layered or smashed or hit by missile drops. took me 1.5 hours. same build as the video and I somehow ended with 1 heal left and half life bar still.

Thanks for the guide. FINALLY beat that boss!

Thank you SO much, I couldn't for the life of me figure out how to dodge his melee attacks. Once I wasn't losing 50% every time it went for a melee attack he was a cakewalk.

nice vid, thanks for the tips&tricks! Also quick little note: your AC auto deploys weapons on your back that have no ammo left to lose weight and make the AC less heavy!

Balteus was a bit challenging for me but I figured it out within 15 or so tries. THIS fight tho. I have died about 40 times and have never even gotten the boss to half health. This will be the first mission of the game that I quit and start over again once I have the right parts. It’s a fun game but holy cow is this boss the worst!

I wanna add: I believe he can mix up his cannon and fire it 2-3 times. It really helps to add vertical movement into the dodges, make sure you're ascending or descending because dodging it on the ground sucks And don't underestimate the small lasers either. They DESTROY your stagger meter. If like me a big focus of your build was melee, the pile driver weapon does a good chunk and huge impact when charged. Once he's in the orange (maybe a little below) a charged pile-driver melee staggers him. (the raw stagger is about half his bar). Pretty easy to land after he melees and you can usually get a 2nd off during stun. Also super easy to hit when he first goes into the air.

Loved the detailed breakdown with video footage, Thank you 🙏

Thanks very much for the boss mechanics and tips, really helpful

I have a similar set up, just keep pace around his legs and when it relocates just dash towards and maintain around the legs. It will keep jumping. Phase two just keep distance and finish off with homings

The only source of information I could find anywhere about the 100% death beyblade attack, thank you. This boss seems to stop using it vs players that have killed it previously. Still convinced the PCA satellite cannons before the boss are harder than acorn spider. damn things are impossible to dodge