After fiddling with it for a while it seems that you may have transcribed it incorrectly but it seems if you had the resulting message would be "Please don't kill me"
Yes, it was likely that I transcribed it incorrectly. I tried several decoding methods, but none seemed to work. Thanks for decoding the message.
If you want to continue the mystery, the website the game referenced several times and was empty is no longer so empty. Mdos79 also has a YouTube channel where he uploaded the game's OST, and it seems there are mysteries to be discovered: a secret message and suspicious audio.
Yeah I know about those things, the secret message is can be solved with caesar cypher/rot if you use the spanish alphabet (it includes ñ). I haven't been able to figure out what's up with the audio though.
Another interesting secret is if you open the /game folder you can find the folder "/smor files" which has several files that can actually be converted into other types of files to find secrets