Best Summoner Loadout To Fight Pre-Mech Duke Fishron?

probably still sanguine staff. The nerf made it more in-line with other pre-mech weapons, but it's still a solid option. I'd use it alongside the firecracker (and snapthorn if whip stacking).

Blade staff could be usable if you are good at whip stacking (if going blades you'd stack with cool whip, spinal tap, and snapthorn) and it requires an ichor flask (which is good for any summoner loadout taking on fishron, but blades absolutely require it since fishron has 50 defence).

check out this for a pretty detailed build guide (only thing it doesn't go into are buffs, which are somewhat self explanatory)
 
Spider gear and most likely sanguine staff still.
Firecracker or Cool whip is your best whip option. (stacked with snapthorn for speed buff)
As for accessories, boost your mobility and damage as much as possible. Make sure you get a pair of wings (frost is best.) Defense won't really matter anyway, because duke will melt you anyway.
make sure you use lifeforce potions, they're one of the best things in the game for boss fights.
 
probably still sanguine staff. The nerf made it more in-line with other pre-mech weapons, but it's still a solid option. I'd use it alongside the firecracker (and snapthorn if whip stacking).

Blade staff could be usable if you are good at whip stacking (if going blades you'd stack with cool whip, spinal tap, and snapthorn) and it requires an ichor flask (which is good for any summoner loadout taking on fishron, but blades absolutely require it since fishron has 50 defence).

check out this for a pretty detailed build guide (only thing it doesn't go into are buffs, which are somewhat self explanatory)
Could also use cool whip
 
Cool Whip also has armor penetration of 30 meaning that combined with an ichor flask you will get 45 armor penetration, but when these two are used with the blade staff’s 25 armor penetration, you get a grand total of 70 armor penetration which is actually more than enough to take on Duke Fishron.
 
Duke's not hard, it's just about how you move while fighting him.
Make sure you et up some heart statues and use heartreach potions.
 
Cool Whip also has armor penetration of 30 meaning that combined with an ichor flask you will get 45 armor penetration, but when these two are used with the blade staff’s 25 armor penetration, you get a grand total of 70 armor penetration which is actually more than enough to take on Duke Fishron.
That's not how it works. The cool whip's armour penetration only applies to the snowflake it spawns, it's not a debuff that applies to targets you hit with it. In the case you mentioned, you'd actually have a snowflake with 45 armour penetration and a blade staff with 40, neither of which can fully penetrate duke's defence of 50. While this isn't that big of a deal for the snowflake, losing 5 damage to every hit of blade staff is a big hit to dps, and it's likely worth equipping both shark tooth necklace and stinger necklace to remedy it (which are 2 accessory slots that you can't use for defensive options, mobility, or other dps options).
 
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That's not how it works. The cool whip's armour penetration only applies to the snowflake it spawns, it's not a debuff that applies to targets you hit with it. In the case you mentioned, you'd actually have a snowflake with 45 armour penetration and a blade staff with 40, neither of which can fully penetrate duke's defence. While this isn't that big of a deal for the snowflake, losing 5 damage to every hit of blade staff is a big hit to dps, and it's likely worth equipping both shark tooth necklace and stinger necklace to remedy it (which are 2 accessory slots that you can't use for defensive options, mobility, or other dps options).
I forgot about the damn damage penalty per hit, like with other weapons from update version 1.4.1.
 
I forgot about the damn damage penalty per hit, like with other weapons from update version 1.4.1.
what exactly do you mean by this? if it's the "some weapons deal less damage the more enemies they pierce", that's not what's happening here. You are losing 5 damage per hit on blade staff because of duke fishron's defence. With blade staff and ichor, duke's 50 defence effectively becomes 10 defence. (enemy) defence reduces damage by half of its value, so 10 defence = 5 less damage. That's why I mention the shark tooth necklace, since with both it and the stinger necklace, you'll have a total of 50 armour penetration, enough to deal full damage to the duke.
 
what exactly do you mean by this? if it's the "some weapons deal less damage the more enemies they pierce", that's not what's happening here. You are losing 5 damage per hit on blade staff because of duke fishron's defence. With blade staff and ichor, duke's 50 defence effectively becomes 10 defence. (enemy) defence reduces damage by half of its value, so 10 defence = 5 less damage. That's why I mention the shark tooth necklace, since with both it and the stinger necklace, you'll have a total of 50 armour penetration, enough to deal full damage to the duke.
Oh that. Damn I should’ve looked at it that way.
 
Ik this thread is from months ago and about Pre Mech Duke, but does anyone have tips for Post Twins Duke? So like, before killing all 3 but with Durendal, Optic Staff and Hallowed Armor. Is the setup still the same?
 
Since you have hallowed set, you should definitely use that. Optic staff gets hit pretty hard by duke's defence, and I'm not sure how good the twins are at chasing duke down, so you'd probably have to try them out. If they work well, optic + durendal (should also whip stack w/ cool whip if able, can also add snapthorn/spinal tap too) would do decently. If not, either blades + durendal + cool whip + spinal tap (probably want shark tooth + stinger necklaces too) or sanguine + firecracker + durendal would be your best bet. I'd probably lean towards sanguine staff if not whip stacking.
 
Since you have hallowed set, you should definitely use that. Optic staff gets hit pretty hard by duke's defence, and I'm not sure how good the twins are at chasing duke down, so you'd probably have to try them out. If they work well, optic + durendal (should also whip stack w/ cool whip if able, can also add snapthorn/spinal tap too) would do decently. If not, either blades + durendal + cool whip + spinal tap (probably want shark tooth + stinger necklaces too) or sanguine + firecracker + durendal would be your best bet. I'd probably lean towards sanguine staff if not whip stacking.
Ah I see, so it doesn't differ much lol, my Whip Stacking isn't really that good so I think I'll just go with Sanguine and Firecracker (plus the occasional Durendal use) and see how it goes, Optic's dps did seem far worse than Sanguine (I got to the third phase once with Sanguine but Optic took a While to even get to the second, upon which I promptly died) so it does seem like a worse option. Thanks a lot for the help!
 
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