How exactly is it obtained? Does each chapter need to be started from the menu, and how is it calculated with the save slots? Is the chapter after 'Inferno' also counted?

I'm playing the original Doom for the first time in my life, and the level design in this game is bonkers. Secrets hidden in walls, switches in random places that open specific doors in specific places, teleporters that seem to take you to the most random places in the level... etc. etc. They must have been smoking something back in the 90s for their minds to be able to conjure up level designs like this. Some levels feel straight out of a fever dream at times. How the hell did people figure stuff out in ...

https://github.com/id-Software/DOOM ...The basic rendering concept -- horizontal and vertical lines of constant Z with fixed light shading per band was dead-on, but the implementation could be improved dramatically from the original code if it were revisited. The way the rendering proceded from walls to floors to sprites could be collapsed into a single front-to-back walk of the bsp tree to collect information, then draw all the contents of a subsector on the way back up the tree. It requires treating ...

Meaning I don't get their popularity, how they even fit into doom, or why ID didn't just make more styilized catholic style demons. I've brought this up before and I don't really care if people think they look iconic, or think they are great additions to doom or whatever. If you you like them fine, but I don't see how these are any more iconic than the cyberdemon or caco. Archville I can give some slack to for looking creepy, but he still looks more like something from a ridley scott film, than doom. And t...

what is for you the worst weapon in the game?.