Confirmed, works fine here as well.

Linux Mint 19, Kernel 4.4, Mesa 18.1.6 , AMD E-450, 8gb Ram

System Information

• GPU: GeForce GT 540M
• Driver/LLVM version: NVidia driver 390.48
• Kernel version: 4.15.0-33-generic
• Link to full system information report
• Proton version: 3.7-6 Beta

I confirm:

• [x] that I have checked whether there are updates for my system available.

Game log

Symptoms

I played only first tutorial mission, however I can confirm that game runs, there are no obvious issues on beggining of the game.

Reproduction

Run a game, play first turorial mission.

The gameplay, menus, etc. all seem to function perfectly based on playing one tutorial mission but I noticed one small flaw: there are some entries under Help & Options -> Don Keystone that I assume are supposed to play some in-game movies. However, they only display a blank screen:

The game's page on Wine's AppDB states that the game used to crash or not start at all on old Wine versions unless wmpcodecs or wmp10 were installed. I tried installing these using protontricks but neither of them would install due to Proton using a 64-bit wineprefix: This package (wmp10) does not work on a 64-bit installation. You must use a prefix made with WINEARCH=win32.

Proton log
My system info

Probably related: https://github.com/ValveSoftware/Proton/issues/1464

Can confirm that the game works but videos don't play.

Distro: Linux Mint 19.1 Tessa (64 bit)
GPU: Vega 56
Driver/LLVM version: Mesa 19.1.0-devel/9.0.0
Kernel version: 5.0.10-050010-lowlatency
Proton version: 4.2-3

media_info.txt
steam-200170.log
system_info.txt

From the log I see "3241.574:0027:0028:err:quartz:GetClassMediaFile Media class not found"

Videos are: WMV, VC-1 + WMA

Singleplayer works fine.
Multiplayer crashes after joining or creating a lobby
EDIT: it works on proton 5

Also tried it out on my oled deck and certain particle effects such as smoke and debris (from explosions or when the worms die) and fire (from weapons that use fire like the fire punch) are not showing up at all.

Easiest way to test is to play through the first tutorial level of the campaign, you'll get access to a rocket launcher and then the fire punch very quickly.

steam-200170.log

I was not able to get a log for the multiplayer crash bug as the game doesn't allow for bots (least from what I tried) and I don't got anyone else playing this atm.

You don't actually need to start a match for the game to crash. I attached a log of the game crashing on proton hotfix when trying to create a player match and a log of the game not crashing when doing the same on proton 5.13-6

steam-200170-proton-hotfix.log
steam-200170-proton-5.13-6.log

Every version starting from 6 freezes when trying to create/join a player match or trying to rename your worms. Tried playing singleplayer on proton 9.0-4 and it starts the campaign fine, haven't gone too far into it as I mainly play multiplayer, so my only purpose was testing.

All these logs follow the same steps:

1. Start the game
2. Start a player match

steam-200170-proton-experimental.log
steam-200170-proton-9.0-4.log
steam-200170-proton-8.0-5.log
steam-200170-7.0-6.log
steam-200170-proton-6.3-8.log