Thanks for playing, your feedback is always useful.
I do plan on using the teleporters more later, but I prefer to keep things varied if possible. Enemy parties in the later levels didn't quite get as much attention as I would have liked. They are random, but there's a method in place to prevent certain combinations of enemies. The fact that you encountered a party with a high HP enemy plus 2 dinos means I forgot to do something.
There are 2 secrets really, the first one was the advanced classes of which I've only implemented 1 so far. The other is just an Easter egg with a low chance of occurring.
The feather bug is news to me, the item seemed to work fine during testing so thanks for telling me. It's the exact same method as characters that spawn a new enemy when defeated and such only you spawn a defeated player instead. I think I know how to fix the other bugs actually.
The perks resetting is not a bug, I give everyone a free respec because I haven't implemented that feature yet and I don't want players to be caught off-guard if I do a balance change. Now the real question is why I haven't done it when I clearly have a method for it? Honestly I have no idea, just forgot about it.
Thanks for playing!