https://bugs.winehq.org/show_bug.cgi?id=26215
--- Comment #7 from winetest@luukku.com --- (In reply to none2366811 from comment #5)
Still buggy with 1.7.50, if Strict Draw Ordering is enabled the game runs a bit slower but at least the squirrels and Dr. Fetus are shown (a bit erroneous, but not as grey textures). I can provide logs and screenshots, if you tell me what you need to fix this. Running with Debian/Jessie and latest Catalyst (Radeon R9 270X) 15.20.1046. The game run fine on my other setup with Nvidia.
If strict draw order fixes the issue I think it's quite safe to assume that CSMT does too. Could you try more recent wine with CSMT enabled?