This guide explains How to Upgrade the Body in LET IT DIE: INFERNO. Including ways to upgrade your body, Core upgrades, Mastery, Body Rank, body upgrade tips, and notes.
Table of Contents
How to Upgrade Your Body
Body Upgrades: Cores & Mastery

There are two ways to strengthen your Body: raise its Body Rank to equip Cores, and spend Mastery Points to unlock Masteries.
Increase Body Rank and Equip Cores

Evacuating from Exploration via the Escape Pod increases your Body Rank by one. Each Body Rank increase allows you to equip an additional Core.
Allocate Points to Unlock Masteries

You can upgrade each Body by spending Mastery Points to unlock Masteries. Mastery upgrades are retained even after death, but reallocating points will change the specific enhancements.
Important Notes on Body Upgrades
You Lose Cores Upon Death
The maximum Body Rank is 6. However, if you die during Exploration, your Body Rank resets to 1, and all equipped Cores are lost.
Mastery Effect Is Body-Locked
Unlocked Mastery effects apply only to the specific Body. Choose carefully which Body to upgrde.
Timothy