Ok, just finished the mission.
Design-wise, it's EXCELLENT, the level layouts are made in a truly masterful manner, specially taking in account D2 limits.
However, and although I truly loved most of the mission, from level 22 up to the end, I found it somewhat more frustrating than fun (specially with so many matcens and invisible bots).
Also, I think some of the matcens were a bit 'off', taking in account the robots it created and the size of the rooms. Take the two matcens at the reactor room of level 28 as an example.
After some activations (had to go through that section more than once) the room was TOTALLY FULL of Fatty Jrs. and Seekers, to the point that the models were rendered on top of each other and the robots couldn't even move and got a bit stuck. Too many big robots in such a small room, lol
Had to use a couple of valuable Shakers to get rid of the bots and get to the reactor.
But still, I think it's one of the best missions released for D2 so far, the flow of the levels, the design details, the puzzles and the texturing are top quality, and also loved the connection to another game throghout the story.