Inferno tactics.

Who? The AI? If so, there's nothing to discuss. You can beat the AI in any way. But in online games, demons are the main force of Inferno. Here, as with skeletons, quantity turns into quality!

Darty, do you have any statistics of your Inferno games? ;)

I think I've played more Inferno games than anyone else on our forums. So, I never focused on demonology; it's long and tedious, and you can't get enough troops for transformations.
I always take Imp, Ballista, and Logistics – that's its strength. And Inferno, like Necropolis, mainly depends on luck with the map layout. Recently, I played on a small map – on day 114, I got 3 Imp nests, 1 Pit Lord, and 1 Hellhound – the Imp ran quickly, and the Ballista fired rapidly from its machine gun :)

Plus, few people have checked (except for me) how often Devils are placed on the first level.