@ trota68, @ hippietrashcan
Older-generation Intel HD Graphics GPUs don't seem to support the game fully.
If your system has dual GPUs, instead of using the integrated Intel GPU, switch to the higher-end discrete GPU (updated with the latest possible driver) before launching the game. Switching the GPU during the gameplay itself has no effect.
See also my comment regarding the log file (which you can analyze): https://itch.io/post/277920