Key Features:

This system is very extensive, the core features are as follows:

Define which skills there are.
Add XP to a specific skill from wherever you want
Determine how much xp is required for the next level (based on an algorithm so it is expanding gradually, but not too much.)
UI functionality for XP gains

Keep track of key statistics:

Current level
Current XP
Current maximum XP in level
Total accumulative XP
Progress percentage
Awarded Skill Points
Maximum achievable level
Has it reached the maximum level
XP Growth factor Version: 5.1 Home Page: https://www.unrealengine.com/marketplace/en-US/product/hyper-skill-level-manager