Even on multiple playthroughs that fight is still a pain, and I can’t imagine it without long-range, high-impact missiles to easily stagger it.

Source: https://kotaku.com/armored-core-6-boss-punch-balteus-cel-240-sea-spider-1850783750?utm_source=regular

“Just when you think they are finally discredited, those bad ideas stagger from their graves … and once again require a unified effort to be put down.”

Source: https://www.vaildaily.com/opinion/guest-opinion-selling-off-our-public-lands-is-a-bad-idea-that-wont-die/

One delivery struck Bill Woodfull near the heart, causing him to stagger; another hit Bert Oldfield on the head, leaving him concussed.

Source: https://www.theguardian.com/sport/2023/mar/11/we-could-feel-the-gravity-of-it-it-was-electrifying-50-photographs-that-reshaped-sport

One method that will make this fight a bit less difficult is to use the hunter tool Augur of Ebrietas to stagger him after he does his plunge attack, which opens him up for a back stab.

Source: https://gamerant.com/bloodborne-most-powerful-bosses/

Player will, which directly affects stagger ability.

Source: https://gamerant.com/ff16-xvi-final-fantasy-16-what-every-stat-does/

Schaff looks to fight out of a chin lock, he’s cut off with a knee strike but when Cage tries a Drill Claw Schaff slips free and unloads with chops to stagger Cage.

Source: https://411mania.com/wrestling/winfrees-aew-dark-elevation-ep-97-review-1-09-23/

The Battleaxe is a solid weapon for the early to mid-stages of the game, especially after the changes to increase its windup speed and stagger damage.

Source: https://gamerant.com/valheim-axes-worst-best/

The double clotheslines stagger Daniels though and Coriolis gives Fletcher the pin at 14:10.

Source: https://411mania.com/wrestling/halls-ring-of-honor-review-3-23-23/

The Flan Prince tends to follow any spell by leaping towards Clive, so dodge that leap and hit it hard to chip away and stagger it, then unload on it with Eikonic attacks to drain its health.

Source: https://gamerant.com/final-fantasy-16-how-get-gelatinous-mass-location-drakeslayers-bracelets-ff16-xvi-flan-prince/

This is a destination like nowhere else in town – with parties pretty much everywhere, small plates unlike any you’ve ever seen, and a bar of drinks that stagger the imagination (and your sobriety).

Source: https://www.dailynews.com/2023/04/16/its-mediterranean-food-and-more-at-tlv-tapas-bar-in-tarzana/

This strategy works well in both phases, using explosive weaponry to stagger the Spider and then pounding it in melee combat.

Source: https://gamerant.com/armored-core-6-vi-fires-of-rubicon-how-beat-sea-spider-best-build-ac6/

While it doesn't deal a ton of damage, just three hits from this Ash of War will stagger most enemies (excluding bosses), and four hits will knock them flat on their backs.

Source: https://gamerant.com/elden-ring-best-underrated-ashes-of-war/