Is that black ooze thing coming back? Better check to see if you have multiple bullets, otherwise you could be in trouble if it's another monster.
(Just caught up with this. Awesome work, I'm really interested in where this story is going.)
Do you have anything you can fashion a makeshift eyepatch out of? In any case, stay out of sight until you've got a better idea of what's out there.
Keep your finger off the trigger, but your gun at the ready as you peak around the corner of the games. It could be somebody not hostile (no matter how unlikely that is), wouldn't want to kill a friendly by accident.
With your gun ready, peek from behind the games with your good eye.
Put your glasses on, hide, and worry about your missing eye after you peek to see what is making the foot steps. Keep your gun at the ready.
Get your gun at the ready, it can't be good news.
Stay hidden and wait for them to show themselves