<I knew shield bash (and effectively all shield maneuvers) do not work in Reim, but I thought they generally worked against corporeal undead.>
As long as you bless your shield, shield maneuvers work just fine against undead, so do any spikes on them (though noncorp undead may not be affected, don't recall ever trying bashing one):
You lunge forward at a rotting chimera with your etched vultite greatshield and attempt a shield bash!
[Roll result: 139 (open d100: 36) Penalties: 5]
Fair bash and a rotting chimera is knocked over by the blow.
... 5 points of damage!
Blow leaves an imprint on the rotting chimera's chest!
A spike on your etched vultite greatshield jabs into the rotting chimera!
... 10 points of damage!
Minor puncture to the left leg.
Roundtime: 5 sec.
They also work against any undead golems you might run across:
You lunge forward at a flesh golem with your etched vultite greatshield and attempt a shield bash!
[Roll result: 133 (open d100: 57) Bonus: 5]
Half-hearted bash and a flesh golem flips end over end and lands on its head!
... 5 points of damage!
Blow raises a welt on the flesh golem's left arm.
A spike on your etched vultite greatshield jabs into the flesh golem!
... 10 points of damage!
Minor strike to the neck.
Roundtime: 5 sec.
Starchitin, the OG
A severed gnomish hand crawls in on its fingertips and makes a rude gesture before quickly decaying and rotting into dust. A gust of wind quickly scatters the dust.
