I went into Paradox Junction thinking the Sundergat would be a quick upgrade, then got humbled fast. If you're still learning spawns or just want to warm up your aim before committing to a long run, a CoD BO7 Bot Lobby can help you get comfortable with the map flow, because this quest punishes sloppy positioning. The key thing to remember is simple: no Blundergat, no Sundergat. So don't even start "doing steps" until you've built the base shotgun from the four parts and actually picked it up from the Cul-de-Sac workbench.
Build first, then play for control
The Blundergat build is the