Hi! Thanks! Glad you like the feedback! Please bear in mind mouse controlled aiming is just an example of something you can do, not an explicit suggestion. I just think you need to do something to make the combat more interesting or remove it altogether. The insta-death if caught method might be better for your game, so every monster encounter would either require stealth, running away or puzzle solving. It would also make the encounters scarier. I'd recommend replaying Another World/Out of this World (or the recently released Full Void) and examining the enemy encounters in there for some good examples of how to do it.
I do think your game has a lot of potential and could be a big success, but I wouldn't recommend giving up your job yet, unless you manage to find a publisher who will bankroll you.
And again, all of these are all just my personal opinions. Feel free to ignore them all. It's your game, you know it best! :)