Traveler only Genshin Impact

I finished all the archon quests in my main account fast but I was thinking what is a really cool challenge I can do

So I decided to make a challenge for 2 reasons

1. finish the whole story and any side quests using traveler only (there are rules)
2. Save primogems for a premium Tsaritsa team or at least C2 :(

Rules are this

1. Must play the whole game with only traveler
2. no usage of teleport waypoint
3. leveling up the traveler is either manual or with books (level 1 book takes 20 min irl, level 2 40 min, level 3 1 hour)
4. If necessary, allowed to add another units but that doesn't mean to go for specific characters
5. if the unit is a "Trial" or with the traveler in the main story then it's allowed in the party for the time being

rule 3 is a bit harsh
if there is rules to change or add lemme know