I absolutely love this game, and I hope that it can go so much farther, sorry just little appreciation bit first. I will say, probably my main issue is  the sight being so limited.  As of now, you have to be able to react incredibly quickly, or be lucky in order to shoot enemies before they shoot you. While I like that this involves fast reaction times, and love that watching the shadows becomes a powerful feature of the game, I would suggest a vision that shifts to the side you are looking at, as then you can be more prepared to see enemies coming, but not in a way that just reveals the whole map to you, and is more immersive in that it is like how you are not really able to see behind you (but don't shift it entirely, being able to see behind you a bit is critical. An example of what I mean would be in Cave Story.) I am terribly excited to see where this game goes, and thank you for reading. 

Thanks so much man, I really appreciate comments and feedback like this. Sorry for the late reply since most of my time goes to developing the game... As you've noted, I've been brainstorming a lot on how to make the enemies more visible without breaking the quick reaction time that's necessary... Features like arrows or a minimap have crossed my mind but might make the game too easy... I'm going to work on it today as the next feature that'll expand the playability... Thank you again 

There's a new update, lemme know what you think :) 

It's on steam now! :) https://store.steampowered.com/app/1531010/Collisus/