Please note: This DLC adds certain achievements to the game. You cannot get 100% without it.
I really love Goat Sim, but this DLC...I don't know. I think I'd like to put "meh" if that was possible, but since it isn't, I'll lean negative.
The vibes for the DLC feel very different from the main game. It's a lot more like you're just working on a checklist to get things done and dusted, which is alright and still probably enjoyable for the most part, but this DLC is also super glitchy. I don't mean this in the "Goat Sim is inherently buggy as all get-out for the funny" kind of way, I mean this in the actual problematic bugs kind of way. Two examples off the top of my head, first being that Pilgor really likes to fall through the ground or get wedged on things in this DLC, which was essentially a non-issue in the main game, but happens surprisingly often in the DLC, to the point I was getting frustrated by it at times. The other example being that NPCs are really, REALLY screwy. Had one I had to talk to four times before I had a conversation that didn't involve the NPC's model shooting down into a building and becoming impossible to talk to, making me unable to figure out what to do without reloading...again, four times.
Apparently this DLC also has problems with crashing. I will be honest and say I did not have any issues with it at all, it was very stable in that regard, but there were a few moments the game would briefly hang unexpectedly. I imagine on a system with slightly lower specs that those hangs could turn into outright crashes. This is problematic as there is an achievement that involves leaving the game running for a minimum of two hours straight without closing it. (EDIT: As of April 2025 this has been reduced to 20 minutes. Much more reasonable.) I'd say the performance of the game is something to consider before buying it. Apparently the DLC is exponentially worse for certain players than the base game in this regard.
Worth mentioning this DLC is also super short (I'm not sure I would say it's worth 15 USD). I think the majority of the items you get from it to play with are super fun, but the map itself and the extra content on the maps isn't always the best. I felt like some of the things I had to do in the game seemed really uninspired and like they were just cramming some extra tasks in to do for padding. When they were good, they were GOOD, but when they were bad, man, they were bad. The references especially felt a lot more awkward than in the main game, no real wow factor, just "oh this is referencing that, ok."
Overall I wouldn't call this DLC particularly bad or particularly good. Just boring with some highlights both ways. The real issues are its performance issues and glitches. If you can look past those, then you're likely to have a pretty decent time overall. If not, I'd skip. It's not a huge loss.