Ok the explosion on the barrels is from Particle universe as we have found this to be a good looking effects system. The Skyline system needs a little work, a job I have planned in after the current task. The PU effect is simply added into skylines assets library and you can use it as any other effect.
The PU editor is a visual editor with many cool effect templates.
I am uploading PU to the asset store as it is now MIT licensed and free to use.
If you still want to use the skyline particle system I will make a walk through for you.
