Mixamo to Unreal

Find the character you would like to use and download the FBX in a T-Pose

Select the animation you wouild like to use

Click download

Format: FBX

FPS: 60

Skin: Without Skin

KeyFrame Reduction: None

Create a folder in Unreal Engine where you will place the character and animation

Drag your character in the folder first

Click Reset to Default 

Click Import All

You will get a warning about Export Smoothing Group.... No worries!

Drag in the animations to the folder

Make sure the mesh to have the new mesh selected

How you can drag your Animated sequence in the game