I've only just discovered this new episode (and wow, did it come as a surprise to me!) I can't really do more than echo many of the previous comments. The appearance was slightly disappointing but considering the rush that's entirely forgivable. Once I accepted that I could look past the ropey CGI antechamber and so on. I'm really glad it used the early series look, there was a strange, creepy atmosphere with the paintings that's still there in the computerised versions of them.
One problem with adults was that it just looks so odd having a tall dungeoneer who stands above all the cast. There must be a spell somewhere that can sort that out...
Most amazingly of all, after all this time it's still the same Treguard. I was amazed and delighted.
It's certainly demonstrated to me that Knightmare still has what it takes and given time to have a bit of polish would be just as good as ever.

)