Warning to Nightmare and Ultra-Nightmare players. Imagine using the tactics discussed later since the beginning of the level, and you can easily make a difference of half circle, or more!
In this guide, I only focus on the last battle, but it shows excellently how much difference can be made even in the course of a single battle. This is the one and only level in the game, where even killing all demons, including all fodder at the beginning, and every Lost Soul at the platforming area doesn’t guarantee that you will have all 5 circles completed by the end of the level, so here are my tips, which have helped me. It is tricky, since it is a peculiar level. I have ran into people asking how to achieve Full Combat Rating on level 8, Advanced Research Complex in Doom 2016 several times.
Introduction: Why is this even a problem?