Finds thus far.

[Korima]

While running through the first playthrough we noticed a few things... just for those who haven't posted it before:

there are gongs throughout the level, which if hit in the right order will do something. We only got 3 before we got stuck XP

There are 4 spinning puzzles with glyphs. I will post pictures tommorow.

Richtofen has the vril generator. Hmmm....

There is a brick that says "Do not Hold X" which causes a waterfall that seems pointless except to slow a few zombies down.

To access the PaP you have to press the two pressure plates to cause the stairs to lower. watch to skulls on either side of the stairs to know your time limit. when it hits the top, a torrent of water will push you down (much to the monkey's amusement)

Okay... Sleep time... Will post more tommorow.