I thought I'd give it a try.  I downloaded guardians.0.82.zip and
unzipped it to C:\Apps\Guardians.
Double-clicking on Squeak.exe gave me a message
and upon opening says "WARNING: This Squeak does not have real 3D support"
and "LoadLibrary(C:\Apps\guardians\Squeak3D.dll) (998: Invalid access
to memory locations).
There are no log files.

Platform...
C:> ver
Microsoft Windows [Version 10.0.17134.345]

I had an intuition to experiment with a few security settings but
didn't really expect a change and didn't pre-record existing settings,
but as best I remember from review the final state...
Windows Defender Settings > App & browser control
  Check apps and files - changed from WARN ==> OFF
  Exploit protection settings >
     Control flow guard (CFG) - changed ON by default ==> OFF by default
     Data Execution Prevention (DEP) - remained Use default (ON)
     Force randomisation for images (Mandatory ASLR) - remained OFF by default
     Randomise memory allocation (Bottom-up ASLR) - changed from Use
default (ON) ==> OFF by default
     High-entropy ASLR - now disabled "requires Randomise memory allocations"
     Validate exception chains (SEHOP) - change Use default (ON) ==>
OFF by default
     Validate heap integrity - remained Use default (ON)

Those changes required a reboot, so I did that and when I re-ran
Guardian's Squeak.exe
a rotating landscape appeared. So probably fixed one of those changes,
if not the reboot itself.

cheers -ben

On Thu, 8 Nov 2018 at 08:41, Stéphane Rollandin <lecteur at zogotounga.net> wrote:
>
> Hello,
>
> Thanks to all the good people that helped having a working Squeak3D
> plugin for recent VM, I am pleased to announce the release of a game I
> started in 2005 and then let kind of forgot, a remake of The Sentinel
> from 1986 (I used to play this one a lot). It is a Wonderland
> application, and it works in a 5.1 image. Nice:)
>
> So here it is:
> http://www.zogotounga.net/comp/guardians.htm
>
> Still in beta, since I have experimented a fair share of VM crashes, but
> very much playable. See the above page for instructions.
>
>
> Stef
>