pepperoni precipitation

Where to find this pizza???

Questionable Ethics: Shortly before you find security guard.

Is that only pizza the achievment works with? I alredy did it, but there is another pizza in Lambda Core, seemingly we can not bring it over to Xen. Now is that a bug, or is it intentional?

Founded in 2004, became one of the first online communities dedicated to Valveā€™s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.