The UE4 achievement system is a free UE4 plugin that allows developers to easily create/manage player achievements using either blueprint code or C++.
Features:
Code Modules:
AchievementSystem (Runtime)
Number of Blueprints: 4
Number of C++ Classes: 10
Network Replicated: No
Supported Development Platforms: Win64, Win32, Mac, Linux
Supported Target Build Platforms: Win64, Win32, Mac, Linux, PS4, XboxOne
Documentation: Link
Example Project: Link
Example Setup Video: Link