They're not too bad, but they would be frustrating if you didn't have tmi or spc installed. Many of the checkpoints dont actually save your spawn point properly and some minor issues within a handful of the challenges. If you've played adventures before you shouldn't have too many issues with it or can find a way around it. I would wait till April first for a bug free experience if you aren't familiar with general adventure maps to ensure a smooth play through.
It's still certainly playable though and a lot of fun.
This has to be the best map I've ever seen. Downloading it right now, I'll make a review afterwards.
Alright, I played it for a couple hours, and I have to say, I am very impressed. The amount of redstone you probably used to make some of those things is really amazing. The amount of bugs was also pretty minimal on my end. The one big problem for me, is that, even at night time, I couldn't sleep on the beds. Not sure what the reason for that might be. Anyways, brilliant map, and I hope to see more amazing pieces in the future
awesome map so far... until I got to bentallea's map. that maze was insane. after about thirty minutes of wandering in circles, randomly hitting switches, I finally said to hell with this, threw it on creative and destroyed walls til I found the exit >_<