Had a weird glitch just now. Accepted a heist setup invitation, but the loading was interrupted with a message saying that the host had left. At first I thought the game had froze, since I was stuck in the host's apartment and unable to move.
Then I noticed that although my character on the screen didn't move, the map actually did. And as I moved around I discovered that I had sound. Alright game, challenge accepted! Let's see how far we can get with only the minimap and sound!
First step: get a car. What could possibly go wrong? Stepped out in the road, but although I could hear some cars around me I couldn't get close enough to steal one. To increase my chances I went to the nearest intersection and immediately got run over.
It was just a flesh wound though, so I quickly got up again and waved my arms about to look for a door handle somewhere. Found one after a few seconds and got in. And of course, it was a Simeon vehicle and I got a two star wanted level.
With the first objective complete, I now found myself with a second objective: escape the cops! Here goes nothing, I thought as I floored it blindly. Interestingly though, driving with only the minimap and the sounds is not too hard. Turned out that there is plenty of room on the roads for a blind driver, and as long a you try to stay near the center of the lines you won't crash that much.
I actually made it all the way to the airport, and even lost the cops in the process!
Achievement unlocked