You might know me from other protondb reports -- I enjoy creating builds that allow games to run, and in the case of larcenauts, this is the build: https://github.com/Patola/wine/releases/tag/wine-experimental-patched -- it includes some patches that aren't still in proton but enable some games -- specially VR games -- to work. You just need to add it to Steam it like you do with Proton-GE. Before downloading random stuff from the internet, see my history on github, on steam and here on protondb to ensure I am trustworthy. BTW: I also opened the bug report for Larcenauts on the proton bugtracker, https://github.com/ValveSoftware/Proton/issues/5452