Special Thanks to Xodroc for his topic on LPV.
1: Follow these instructions to activate LPV plus add a directional light with Affect Dynamic Indirect Lighting turned on.
2: Create a new Emissive Material with Use Emissive for Dynamic Area Lighting turned on (See Image) and apply it to your mesh on level.
3: In your dynamic directional light set its intensity to 0.004 (Anything below that disables Emissive Lighting).
Here are some screenshots.
With Emissive Lighting:
Without Emissive Lighting:
We can also modify Indirect Lighting via Material: