Super fun little exploring game! since this was so well done I'm going to be a bit picky :)
Loved the main menu loved the music, one thing that would greatly improve things would be a volume slider or even a mute button. I know this game is based on music, however, having a sound slider would have been a bit nice. not necessary but nice.
I wish there were more ambient sounds. If you decide to go back or clean up the project more, adding ambient sounds like wind blowing or just outside noises, id look at some RPGs to get an idea or just step outside. You could do crickets with cars or stuff. It would have been super nice to have that between your music tracks to keep the atmosphere of the game.
Adding Separation between the start room. It's a bit weird that you can just walk out onto the path and into the hall on your way out. I think adding something like the berlin wall 'as room separation' between points like this would be nice.
adding things like dialogue blips or muble talking would be nice. general ambiance
Credit screens:
Something super basic but that could go a long way 'dependent on the willingness of artist too' but if you had painted images representing each ending type, that would be sooo cool. so here are some ideas.
There was 'not sure if this was a glitch' but you could bypass the guards if you went to the topmost left corner and worked your way right to the escape. not sure if this route was intended but having an ending screen representing these things would be cool.
Guard getting shot if you take the gun 'comic style watercolor painting of you shooting the guard and escaping through the wall' at the credit screen
Guard gave the smokes 'comic style watercolor painting of you handing the letter to the guards friend after you escape out in the country somewhere' at the credit screen
and if avoiding the guard all together was possible, maybe just a muddied up version of you escaping somehow or running from the guard dogs at the credit screen
then maybe some type of melody to represent each style of ending. maybe it goes neutral ending, happy ending, sad ending or something like that.
Great game overall and enjoyed it!