Oh damn, I was hoping it'd magically just work :/ Sounds like the visuals are failing hard, the sounds tell me that you're loading the first level and (moving right) picking up the first ability. Either some part of my code is Linux-unfriendly (maybe the resource loaders?) or AsciiPanel doesn't play nice with it (some people in Trystan's tutorial had problems, but nothing like this). If only I had access to a Linux machine... but if I do fix it or find a workaround, I'll get back to you :)
I coded the game in Java in VSCode and it uses Trystan's AsciiPanel extensively, Maven as project management.