The difficulty was their definition of a campaign. After explaining my campaign background (?) or what I thought was - they explained their definition a little different. Which I did have overlap but could have angled my answer better if I had known.
Why did I apply for the job?
What levels in Starcraft 2 were your least favorite and why?
There were a few questions about PPC knowledge, campaigns structure, strategy, reporting, optimisation, ...
My understanding was that their main interest is to learn more about how the candidate would react to potential problems, issues and practical solutions applied to the daily responsibilities.
Past experience
Past experience and social knowledge.
What is the first thing you will do if you get the job?
When have you demonstrated this behaviour in the past?
What was a time when you messed up in your previous job?
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