Spent over an hour after filling the "soul chests" and building the switch, looking for the switch by QR to get back to spawn. Couldn't find it.

I ended up quitting.

You don't even need to fill the fuses with zombie souls or even build the switch. That's for the Easter Egg entirely (thank goodness). All you have to do is find that hidden switch by DT. I myself had played many times, even on one occasion survived 15 rounds without Jugg or QR (I never use QR in solo) before I finally figured it out.

As I said in comments before, crawler issue will be fixed in 1.1 and some other stuff, like Napalm Zombie one-hitting always on huge radius and some weapon/mapping mistakes. I will release update in few days, just need to add perklimit and way to open all perkslots (which Im doing atm) and its done

Oh, nice! Looking forward to it!

Awesome map
but is it possible to make crawlies? never made one

Can't make crawlers. I think Hitman said that it could be some bug carried over from Napalm zombies (cuz they can't be crawlered). I had to give up on the Easter Egg because I couldn't make time to search for everything. When I looked up Relaxing's co-op gameplay with Hitman himself, I realized that it was literally impossible to figure it out on solo because some features were hidden in spots where you can't leisurely look through. Also, you need 5 tomahawk throws on blue skulls to upgrade it, impossible to do without ending a round and waiting for a Max Ammo. Though it's a great map, the next map Hitman makes should be friendlier to solo Easter Egg hunters. At the very least, he can patch this in a v1.1 and allow crawlers.

He literally said how to get back to spawn, go out of spawn room, build up points, then hit the switch that takes you back to spawn and go look at the objectives.

I finally found the switch! Didn't even need to do any Easter Egg business at all, haha...

1st. The parts for switch is part of EE, look up objectives in spawn, if you get stuck
2nd. Theres a switch near QR-area, that will take you to spawn

Yeah, thanks for telling me to look up objectives in spawn when I can't even afford it (cost: 1000, have 500 points and no zombies that spawn).

Theres few doors to open to get back in spawn

I know about those few doors, but I'm having a bit of a hard time getting back up there. I know it has something to do with all those zombie souls that I have to collect in the fuses, but some areas are really difficult for solo on round 10+ without Jugg. I'm thinking of buying only Speed Cola and then trying to spend all the points on doors to try to fill up all those fuses, see if I can do that without being overwhelmed later on.

Definitely one of the more original and aesthetic pleasing maps. Struggling to figure out where Jugg is, especially since I'm doing this on solo. Is that starting room a troll, btw? "Press F to Show Objectives. Cost: 1000" (starting points is 500)

 For some reason, when I try to launch this mod, it appears to just load regular campaign/co-op. Even through the UGX Map Manager and Mods menu, just nothing. Funny thing is, the other mods I have installed don't have this problem, so there was either an error while downloading/installing this map or some of the files were broken to begin with.

I was a bit hesitant to try this map out because I normally don't like to associate myself with AW guns (I have a personal grudge against AW because it is by far the least realistic CoD I have ever seen, plus the Advanced Supply Drops is the ugliest cash grab system I've ever seen and I think it should be banned from CoD because most that buy those are kids with their parents' wallets; rant over). Seeing that you only put 1 AW gun, I'll give your map a try. This is probably the only time I'll ever play a WaW custom map with an AW weapon.