Soul Bound adds an Undertale-inspired soul system that assigns one of seven souls on first join (per world), provides EXP/level progression up to level 20—each level grants +4 max HP and +1 base damage—and offers five configurable ability slots with a HUD showing your soul heart, level/EXP, and abilities; activate abilities by pressing their assigned keys while aiming (defaults R, G, V, B, N).
There are also 2 commands only admins can do
/soul set (color)
Lets you change your soul depending on the color you choose
You can choos Red Blue Green Cyan Yellow Orange Purple
/LV (Number)
This command lets you set your LV from 1 - 20 (20 is the max)