Start a new character. Samurai is a good choice because of bleed. Optionally, simply use a NG+ character.

Buy crafting kit from Kale in the Church of Elleh

Rest in Gatefront Site of Grace to get Torrent

Pick Whetstone Knife from Gatefront Ruins

Teleport to the Church of Elleh Site of Grace and talk to Ranni to get Spirit Calling Bell and Wolves spirit summon

Get Flask of Wondrous Physick from the Third Church of Marika in north east Limgrave.

Get the Dectus Medallion (Left) from Fort Haight in Limgrave (east Limgrave, south of Mistwood)

Dectus Medallion (Right) from Fort Faroth in Dragonbarrow (Caelid). Easiest way to reach there is from waygate portal behind Third Church of Marika and going south from Bestial Sanctum, or you can just ride all the way there from Limgrave. To get the item you can just run through all the enemies up the stairs, you don't need to fight anything.

Run all the way from Limgrave to the Grand Lift of Dectus, by bordering Stormveil castle to the east and crossing all of Liurnia to the north. There is a Spiritspring nearby the walking mausoleum in the lake, nearby the cliff that leads to the Lift.

Use the Grand Lift of Dectus to reach the Altus Plateau.

Radahn Festival should be active now, and you can defeat Radahn. You can cheese Radahn by keeping summoning NPCs instead of engaging with Radahn directly. You can also use poison or rot.

Restore Radahn's Great Rune by visiting the Divine Tower of Caelid, and climbing to the top through platforming

Run through Stormveil Castle, defeat Godrick and restore his Great Rune

It might be possible to defeat Rennala and get her Great Rune, which does not need to be restored. I don't know. If someone tries this, please let me know.

Talk to Varré in Rose Church (west from Fallen Ruins of the Lake grace in Liurnia) and get Festering Bloody Finger

Use the invasion sign to invade Magnus the Beast Claw, it can be found in one of the ruined buildings in Writheblood Ruins, in the path from north Altus toward Mt. Gelmir. Altus. <a href="https://mapgenie.io/elden-ring/maps/the-lands-between?locationIds=165882" target="_blank">Location</a>, or just use the invasion sign 3 times to invade players.

Talk to Varré in Rose Church, accept the dialog and get Lord of Blood's Favor

Soak the Lord of Blood's Favor a maiden's corpse in a handful of ways, depending on what other quests you want to progress.

From the Dectus grace in Liurnia, head to the path south east and reach the Church of Inhibition. Ignore the invader Vyke and just touch the Grace, then in the Church of Inhibition, soak the Lord of Blood's Favor in the maiden's corpse.

If you also want to progress Nepheli's questline to get 2 x Ancient Dragon Smithing Stones, you can go to the Four Belfries in Liurnia, take the magic portal to Chapel of Anticipation, defeat the Grafted Scion and soak the item in the maiden's corpse found inside the chapel.

Kill Irina next to the Bridge of Sacrifice and soak the Lord of Blood's Favor in her corpse (might also be possible to do it after she is dead when you deliver the letter to Edgar in Castle Morne, not sure).

Kill Hyetta near the Lake-Facing Cliffs site of grace and soak the Lord of Blood's Favor in her corpse.

Talk to Varré in Rose Church multiple times until he gives you the Pureblood Knight's Medal

Use the Pureblood Knight's Medal to reach Mohgwyn's Palace

Defeat Mohg, Lord of Blood, in Mohgwyn Dynasty Mausoleum. You can summon to get help to defeat him. You can also make the fight easier by using Purifying Crystal Tear, Mohg's Shackle and weapons or effects that inflict bleed, for example Rivers of Blood, Swarm of Flies, Reduvia, Cross Naginata, Eleonora's Poleblade, Gargoyle's Twinblade, etc, depending on your build

Reach SotE ASAP