Please note that Steam and Proton 5.13-2 must already be installed

1. Install Legendary (open source epic games command line client) https://github.com/derrod/legendary
2. Connect to your account: legendary auth
3. Install troy: legendary install 11e598b192324994abce05bad4f81b50
4. Edit legendary config file: gedit ~/.config/legendary/config.ini &
5. Tell legendary to use steam proton to launch the game: see config file content at the end of this instruction list
6. Create wine pfx directory: mkdir ~/.troy_pfx
7. Launch the game: legendary launch 1e598b192324994abce05bad4f81b50

Config file content:

[Legendary]

[11e598b192324994abce05bad4f81b50.env]
__GL_SHADER_DISK_CACHE_SKIP_CLEANUP = 1
RADV_PERFTEST = aco
DXVK_HUD = full
STEAM_COMPAT_DATA_PATH = /home/**[your user name]**/.troy_pfx

[11e598b192324994abce05bad4f81b50]
no_wine = true
wrapper = "/home/**[your user name]**/.steam/steam/steamapps/common/Proton 5.13/proton" run