Day 1
On Day 1, you should immediately kill small enemies around where you spawn to reach at least level 3.
After that, head to the nearest Lightning or Fire Settlement since these damage types are gonna be the best you can get until you get
Axe Of Godrick. Loot every chest, and kill every enemy in hopes of finding the ideal weapon and additional weapons with any of the listed passive effects attached to them.
Look for churches and plan your route around them; this is a good rule of thumb since it's your only source of healing upgrades.
Day 2
On Day 2, head back to the Lightning or Fire Settlement to look for upgrades for your weapon and start looking for World Bosses such as Carian Knights and Dragons, these will have the highest chance of dropping your
Axe Of Godrick or powerful character passives.
Similar as day one, look to route around churches if you don't have something else in particular you need.
Day 3
Day 3, immediately check the merchant’s inventory, see if he has anything worth buying over leveling up, such as weapon upgrades (Smithing Stones).