Lock yourself into the lord of frenzied flame ending ---> save Melina's life by burning the Erdtree yourself ---> use Miquella's needle ---> become the ultimate simp.
so... in regular ending you got : Chair in Golden ending you got : shining chair in death ending you got : foggy chair in cursed ending you got : putrid chair in Ranni's ending you got : Waifu (?) in Frenzied Flame Ending you got : Cool scar, glowing yellow eyes, and hot haircut + additional Destined death delivery
So you either become the elden lord, marry a doll waifu and go for a lonely 1000 years honeymoon together, or burn the entire universe to save a ghost waifu and have her chase you to the end of the world to kill you. What?
4:00 You don't have to respec if you don't have 37 int. You can achieve it by item stacking. Marika's scarseal: +3 int Intellgience-knot crystal tear: + 10 int Grafted blade greatsword's ash-of-war Oath of Vengence: +5 int Twinsage glintstone crown: +6 int Stargazer heirloom: +5 int Godrick's great rune: +5 int This adds up to 34 intelligence. Even if you picked hero or prophet, the classes that only have 7 int by default, you can get up to 37 without spending a single level by stacking these effects.
Quick tip. You don't need to kill twin gargoyles to reach deeproot depths as many people think, they are defending only one way to that place. Go into the layndell capital canals, reach site of grace in front of frenzied flame (good luck with the parkour btw.) Then attack walls in that big room with grace you fell into. One of them is an illusory wall with a chest and another one behind. Congratulations, just jump down and you are in deeproot depths. Unlike four belfries teleport to farum azula this way really let you explore all that area
You can take the frenzied flame and burn the erdtree to prevent killing Melina and then use the needle to seal the flame. Unfortunately it doesn't actually grant any special or additional dialogue or tidbits of story, but I like to think that this was the better option to avoid becoming a second Vyke (died for Frenzy Flame use to save his maiden) and it's a great 1-last-middle-finger to the golden order from the merchants
With Shadow of the Erdtree context, Age of Despair is where Dung Eater succeeded where the Hornsent failed: everyone gets the blessing of the Crucible horns.