Please, for your own sake, backup both your save and all files that this mod alters. I won't be responsible if a bug or any irrecuperable damage to your save/game. I recommend you backup your entire Scripts and Game folders, but if you wish to backup the individual files, I'll refer to their locations below.

Save File Location: C:\...\Documents\Saved Games\Hades
Backup the entire Underlined Folder.

Files Altered by this Mod:

Located under C:\...\Steam\steamapps\common\Hades\Content\Scripts\
ConsumableData.lua
DeathLoopData.lua
DebugScripts.lua
GiftData.lua
KeepsakeScripts.lua
HeroData.lua
LootData.lua
KeywordData.lua
MetaUpgradeData.lua
Powers.lua
QuestData.lua
RoomData.lua
RoomDataAsphodel.lua
RoomDataElysium.lua
RoomDataStyx.lua
RoomDataTartarus.lua
RoomManager.lua
StoreData.lua
StoreScripts.lua
TraitData.lua
UIScripts.lua
WeaponData.lua
WeaponSets.lua
WeaponUpgradeData.lua

Located under C:\...\Steam\steamapps\common\Hades\Content\Game\
Projectiles\PlayerProjectiles.sjson
Text\en\HelpText.en.sjson
Weapons\PlayerWeapons.sjson

Installation:
Backup your save and all the files this mod edits, as specified in "2. Warnings";
Download the latest version of the Mod in the Download Tab;
Go to C:\...\Steam\steamapps\common\Hades\;
Make sure you're not in the middle of a run (things might not work properly);
Extract the attached file and overwrite all files when it asks for it;
Launch the game, have fun with the mod!

Uninstallation:
Make sure you're not in the middle of a run (again);
Copy and paste all the files in your backup folder back into their original places;
Launch the game, have fun (without the mod)!