Perfection. Well, perfection with some feedback if that exists. I loved it. The design, the artwork, the difficulty, the pace, everything. It was fantastic. Now onto specifics:

Pros
- Again, the design and theme was just beautiful. Amazing job.
- The boss was defiantly a welcome addition.
- When I first saw the all fiend theme, I almost crapped my pants, but I think you guys found a really good balance with the beasts, I think they complimented the fiend's attack style without making it impossible.
- The difficulty was that on par with Legion of Almire, making it a welcome addition into the Danger Misson family

Cons
- As others have said, the boss needs to be harder. I love the idea of the obstacles he makes, but I think he needs to do more then just spawn ice. Also, the fiends that spawned all turned into bosses and mini bosses, removing them as a threat. I think it would be far to someone ensure it's the level 1 version of the freeze fiends (sorry, I don't know their real name).
- The ice chunks need some of indication of how close they are to breaking, like the 3-hit blocks. Although I understand this misson is still a work in progress and this may come yet.
- The load out station on the second level doesn't work.
- Feed me story, please. I'm hungry for plot, haha. (Again, I understand this may still come).

Fragmentation Concernes
I don't know if this bothers anyone else, but it bothers me. With this addition, the game is becoming a little more fragmented. For instance, we have four dungeons, all with their own bosses, and all rewarding tokens. Then Shadow Lairs come out, which was harder versions of the same four dungeons. Good, simple, clean. Then Operation Crimson Hammer came out. A new dungeon, with a new boss, but this time no tokens, just a material. Now there are these danger missons which I like the idea of, but how come some of them have bosses, some of them don't? Going forward, where should we expect to see bosses and what's the point of doing them if not for tokens? Again, I doubt anyone else cares, but I just think things are getting a little scattered.

That said, I honestly believe this steps Spiral Knights up a whole new level. This holds such promise for where you guys will take us in the future. I am really excited to see where you guys go with this, keep up the amazing work, I am really impressed!