You press the Left Mouse Button like any shooter, lol.
Viewing post in Strange Terror From Beyond The Stars! comments
Don’t feel bad, it’s not often that you find brand new gamers on sites like this. You’re the creator right? Maybe you could put in a patch so that when you pick up the gun it inculdes how to fire in that “only one round” message so new gamers don’t get lost. I really love the game though, so don’t feel bad!