How to change level on complete triggers?

Hi All!

At first, sorry if my question is basic. I have search on the web and i dont find any solution.
Lets Go:
I have a scene based on (First Person ExampleMap) and i have 4 enemies. When i shoot to anyone (they ara actors with a triggerbox), they dissapear with a explosion (everything is fine to this moment) but i whant to load new level when all enemies are dissapear.
Anyone know how can i do?

Thanks in advance.

You cant do this.with triggerbox.