I -think- I had the same phenomenon during "Eztli-Tenoch's Right Hand", but I'm definitely seeing it in "The Way Out". Monsters spawn and go -away- from the game area, straight left off the screen, with no walking animation. Several waves later they will march back towards the right and into the game area. So far I've seen it in normal and extreme difficulty, and the game speed does not seem to have an impact. I don't recall this from playing earlier versions and I assume it's not intentional?

What version are you running? IIRC, there are a few different bugs that cause similar enemies leaving bug. Some are already fixed.

Speaking of 2.0.4c, that version is about 80 MB smaller than the version before and my virus scanner tells me there are about 1400 files less inside the installer. Are you sure this release is complete?

Ahhh, interesting.

What's up? I wanted to know so I uninstalled the old version before putting the new one in.

Old version had 1,533 files (83 mb) in the ASSETS/TILED directory
new version has 135 files (8 mb) in that same directory.