I like it.
Difficulty 7/10

Monsters:

Zombies:
They seem to be able to take a hit, but that is a good thing.

Mini-slag Guards:
Very Low amount of health. Soloing I was able to kill them with about 2 shots of Pulsar. They are tricky, some of them spawn without warning while others wait to be approached. I would like to see them jump up without warning more often throughout the level. It makes them harder. I do like them not getting up until approached in the fighting rooms with party buttons. Not much of a problem now, but if you make them harder, 4 mini slags with all the other stuff. It can get crazy. They do seem to be the smartest AI yet, so props.

Bomb-Head Zombies
I DO like being able to shield bump them. If anything, just decrease the length they go when shield bumped. (I don't shield bump them to kill them, I run into them and simply move away) reason I want to be able to shield bump? When they are in a group, they explode off each other and you can find one right up your ally. No shield bump = Screwed.

Kats:
Fine

Silkwings:
Fine

Howlizer:
Fine

Lumber
Fine. Love its edition. First reason, it reminds me of a haunted place and the trees attack. Second reason, its the ONLY creature that doesn't deal shadow damage, so they hit hard. It makes it more difficult.

Zombie Trojans:
Fine other than the fact the brandish line swords can inflict status by hitting them from the front side. I'm not sure if that was intentional or not.

Level-Layout

Level One
Blocks to destroy, to hit the switch. If you are a solo sword or bomb, you are downstream without a paddle. They are the blocks that take 3 hits to demolish and all there is to destroy them is one fire vase. This is one of my biggest concerns.

Level Two
Like others have said, party button at the beginning.

I would like to re spawn points for the bombhead zombies stop after a room is completed. (when all totems are on the floor plates)

The mini foreshadowing cut scene. It initiates with or without all enemies present dead or alive. (The one with the gates that open and release bomhead zombies)

General
I'm not loving the fact of so many 3 hit demolish blocks. They work in regular graveyards because phantoms are chasing you. In this case, they just give a sense of familiarity.