Okay, so I got to the 2nd area (the first 'checkpoint') and I think it's a bad idea to have turrets that shoot you from off-screen. I feel like I HAVE to die to even figure out how to deal with them. And it seems like the only way to kill them is while they're off-screen too. I don't like that.
I'm going to see how far I can get though, and I'll keep letting you know my thoughts along the way. I'll try not to be too harsh, but just know that I am in your shoes, so I know how it is, and I want to hopefully expose you to any blindspots that you may have.