[Arknights]How to quickly promote a 6-star to E2! You can do it in just 4 days from scratch

I attempted to see how many days it would take to promote a 6-star operator to E2 in Arknights, starting from scratch. The chosen operator for this experiment is SilverAsh, who is obtained from the initial gacha pull.
This information could serve as a reference for those who are starting with Arknights or facing difficulties with Orundum (in-game currency) and materials.
Please note that this method requires some familiarity with Arknights' mechanics and gameplay, so feel free to enjoy the game at your own pace!
For low-rarity strategies for Mizuki and Azure Leaf, you can watch the video here:
• 【アークナイツ】『ミヅキと紺碧の樹』を低レア...
[Table of Contents]
01:03 Overview of the 4-day process
01:37 Day 1
03:03 Day 2
05:31 Day 3
06:44 Day 4
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