Hey! That's... Really goddamn weird, I'm not gonna lie. The line "I'm so, so sorry" doesn't jump to a new scene, so I'm hard-pressed to think of why it would glitch out like that, and I can't think of a single reason the horn mech would jump you all the way back to episode 5. I'd recommend rebooting your computer, and if that doesn't work, I'm happy to issue you a refund. Apologies for the glitches!!
Hey! Dont worry, I got past it by running the windows version with WINE (windows compability layer), and thru WINE it works! :D Gonna continue the story today \o/
I tried looking at some logs and stuff, there seems to be some hickup at the usage of "." but I'm not sure that's related? I cannot attach files to this reply but I'll try and send you a PM or however it works! I'll send you the unity Player.log.
For the record I tried running the linux game with the -force-glcore and -force-opengl, both the 32 and 64 bit versions, no change.
I have a friend Liam who runs the gamingonlinux.com site, and I said he should cover your game, but he said until these bugs are fixed he probably wont have time. It might not be worth your time still tho but you decide! Im happy to try out any fixes you make.
Thanks again for a great game!