Welcome to Soulslike Weaponry, a mod that started with me wondering how fun it would be to add the Moonlight Greatsword to Minecraft, which turned out to be a bigger project than I anticipated.
The wiki here will be up-to-date with the latest release, so keep in mind that older versions may not contain certain features.
The mod is highly configurable, you can always edit health of bosses, damage to weapons and other aspects in the config (config/soulsweapons.json).
Mod pages: