This is a walkthrough of a route I take whenever I start a new character to get super strong super fast. This works for all builds as we're collecting core items which help you get OP early. This guide includes fast leveling early, getting lategame upgrade materials and getting loads of flask upgrades.

We'll be getting overpowered at very start of the game and we'll have the following in first 90 minutes, without the need for combat:
Somber Stones 1 to 9,
10 Sacred Tears,
16 Golden Seeds,
160k+ Runes,
11 Maps.

00:00 Introduction
00:55 Part 1 Route Part 1 Intro West Limgrave and Weeping Peninsula
03:40 Part 1 Somber Stone (1)
05:10 Part 1 Somber Stone (2)
07:06 Part 2 Route Part 2 Intro East Limgrave and Caelid
10:35 Part 2 Somber Stone (9)
13:45 Part 2 Somber Stone (8)
15:38 Part 2 Somber Stone (4)
15:47 Part 3 Route Part 3 Intro Lake of Liurnia
19:22 Part 3 Somber Stone (3)
22:08 Part 4 Route Part 4 Intro Altus Plateau and Capital Outskirts
26:40 Part 5 Route Part 5 Intro Volcano Manor and Mt Gelmir
30:52 Part 5 Somber Stone (6)
31:08 Part 5 Somber Stone (5)
31:37 Part 5 Somber Stone (7)
35:43 Upgrading flasks

I've split the route into 5 parts and have provided maps of these routes.
ROUTE MAPS ablum: https://imgur.com/a/qvcbhY4

Route Part 1 West Limgrave and Weeping Peninsula
Link to Map: https://i.imgur.com/nekOPdF.png

Route Part 2 East Limgrave and Caelid
Link to Map: https://imgur.com/tWL6pxj

Route Part 3 Lake of Liurnia
Link to Map: https://imgur.com/94hgKvx

Route Part 4 Altus Plateau and Capital Outskirts
Link to Map: https://imgur.com/jakYPgj

Route Part 5 Volcano Manor and Mt Gelmir
Link to Map: https://imgur.com/RhWwmcr