Any tips for no damage lighthouse?

[Chronobyte]

I have tried going there on 0bc, going there with ice armor and slay the spire item, going there with massive dps build and still nothing worked for me.
Is there any tips for doing it besides going there so many times it will burn into my memory?

[gbors]

Give the servants a good kicking on the way up, so that you'll have to contend with a shorter phase in the arena. A legendary Giant's Whistle is your best friend, but an ordinary one is helpful as well. Don't forget to wait for your skills to fully cool down before moving further up.

[Biddion]

While I have not achieved this myself, I have come close several times.
First, it won't matter if is you using 0bc or not. The boss fights seem the same to me, and with fewer bc's you have fewer opportunities to get the gear you want and less coin to roll the mod on said gear.
Second, are you having trouble with the journey up or the arena fights? Traveling up I find busting through few wooden columns and using them to go vertical tends to help me get up with no hits. If its the arena, then it will depend on your gear and mutations.

I can almost clear without taken damage with a ranger's gear.
For this fight, I tend to like armadillopack (something I always use), barbed tips, and networking. I use a colorless shield or parry shield in backpack, and often carry a hokuto's bow and another ranged weapon with poison or bleed. Letting DoT and networking do most of the damage, I focusing on dodging. Cool trick with networking is that doors count as enemies so this isn't a wasted mutation on most boss fights.