Was your typical interview. However they lied a lot and talked up the internship. Don't listen to them.
It's not too difficult an interview because they just want the free labor and don't care who does it.
Oh and the initial interview was actually done by an INTERN! That really shows how much they care. No one who actually works for the company is even trying to hire people, they are letting and INTERN make the decisions about who should come work there.