Thank you Lucas for playing! Yes, the sight range of the enemies is a bit far. I think proper level design may solve these kinds of issues, so that one does not have direct sight of enemies from afar. We had the dilemma where, enemies could either see you first OR you see them first. In the latter, you can easily snipe them off before they reacted. Thus we went with the former option.
That said, level design might just be the savior to this kind of dilemma. :)
Once again, thank you for playing! We appreciate it and thank you for the feedback!