Wad Commander: Play Doom I and II in the Browser
wadcmd.com
wadcmd.com
Part 1: https://www.youtube.com/watch?v=PTvTsl3x2qY
Suburbs is a pretty nasty level to begin with, but IIRC the only way to deal with the two archviles efficiently is double shotgun at close range, which involves popping the invulnerability or it’s not going to work.
Real players are on -fast.
https://zandronum.com/ - get the software, join the discord
https://doomlist.net/ - see active servers
Ha. There's still people on CS1.6. I dip in a play a couple games every now and again. I found a server, not too long ago, that was running a full conversion Rocket League mode. Occasionally, you could see a flash showing that you're just a CT/T wielding a knife before the custom graphics load in and you're playing soccer with rocket propelled cars.
(they seem googlable but a list would aid discoverability).