Everything depends on the map.
For example, when playing by chaos rules on template 12XM6 (I don't remember exactly, but it definitely starts at 12), the Castle is simply devastating.
In general, the gameplay tactics for Inferno boil down to the following:
1. Start Pirya with a machine gun
2. Find a fast stack and use the machine gun to clear the respawn. Usually, this stack consists of ifrits, which can be built up quite quickly.
3. The main goal and strength of Inferno is accumulating a powerful striking stack of demons, for which any unnecessary low-level monsters are sacrificed... yes, this requires a bit of hassle and skill ;).. but there are experts who have 300-400 demons by the 3rd week. With such a stack, Dragon Utopia are easily broken :) additionally, pits can be used as makeshift archangels for resurrecting an army in reserve, which is a strong asset.
But I don't like playing this faction :)... due to its specificity.