I think that is was overall a great hour or so spent playing.
The campaign was MUCH more hectic than previous and many may find them self’s dying once in a while (thankfully I only died once from my own stupidly), regardless I don’t think it needs to be made harder nor do I think it needs to be made easier, this really brings out the best of you, I think the level of difficulty needs to stay the same.
Level design was very well done with more interaction with the environment than normal and the path was less liner than normal (with times when you need to pick which way to go) which is a welcomed edition.