Yeah that's a really good early level fight with just five goblins total for enemies. It also shows that enemies will try run to reinforcements if you try to just rambo your way into their space. They don't just stand and fight until you win or lose, which is something that is very video game-y and IME newer players expect that to happen. I almost think it went too well for much could have happened, but hey that happens sometimes and I think the second wall afterwards does sort of convey to a reasonable person how bad things can get if you don't hit every single game changing attack roll ever as those goblins could have seriously messed them up with worse rng. I kind of feel bad for Altare, he just keeps arriving late or getting into clumsy situations due to bad luck and unfortunate positioning when combat starts in some of these encounters. He just spun on his shell and posed for the goblins that entire hallway encounter.
If it is compounding bad decisions then I'd expect Altor or Curiobot deciding to destroy everything in their way, as that has pretty much always worked up to this point, and they piss off something dangerous like a dragon or something. Vesper seems like the type of DM to punish that kind of reckless abandon, and I'm all for it as I hate pussy foot DMs who just let players do dumb shit just because it is early level.
Can't wait for it all to tumble down.