Sorry for the outages this weekend - I recently enrolled in Microsoft's BizSpark program, and took advantage of the MSDN Premium Azure subscription. Unfortunately, there were some issues getting my old subscription migrated to the new one, but here we are! Hopefully this week I'll be able to post more information about Infestation, as well as get more done on it!
I'm currently overhauling the wave management logic to give me more flexibility in how/when creatures spawn. Additionally, it will allow me to statically pre-compute some pathing routes, which will help performance greatly. Maybe I'll put together a post describing it for posterity.