I think you might need to package your assets in the jar. I can’t launch getting the following error.
Caused by: com.badlogic.gdx.utils.GdxRuntimeException: File not found: C:\dev\dev7\Workspaces\LibGDX\Jams\Pinuwuk\LilGuyGameJam\assets\content\LilGuyGamejam\Tiles.atlas (Internal)