Kicking the bombs will make this fight almost trivial, just make sure there isn’t fire where you want the boss to be. Also, make sure you have projected textures on, it cost me a couple of vessels to realize you won’t see the Darkened Sky if you have it off, its hitbox is surprisingly accurate so it’s not that complicated to dodge once you can actually see where it will land.
Other than that just make sure you kick the poly and avoid the 2 1 shots, entering this fight with gift of the titans not on cd is also a good idea, the black dudes that spawn at 50% sanity might save your life if you get a proc out of them and maybe, just maybe, make sure you’re a bit higher ilvl lol.