Incredible, with some issues
Growing up around computers, I found this game really easy on just about every difficulty other than Impossible. I have to admit, it's an amazing game - but it did make me get out the gel rest I have for my wrists. First game to ever do that for me, who types faster than he speaks (Honest to god).
An amazing game. I really only found a few issues, but they were just enough to make me give this a 9/10. The first issue is that sometimes the shot will miss. Now, on Medium and Easy, it doesn't make too much of a difference, but when you need to hit every target (On Hard and Impossible), a single miss can be devastating.
The second big issue is, as many others have pointed out, sometimes two enemies will spawn on top of each other and the words become jumbled together. With a keen eye, it's not too difficult to pick one word out, but otherwise the only way to stop it is with a detonate.
The third, and really nitpicky issue I found with the game (This is from someone who spends a lot of free time writing fiction) is that there are a couple of typos, but again, this is really nitpicky and I only notice it because I happen to do a lot of writing in my free time. The prime examples I noticed were 'Jumk' (I assume it's supposed to be 'Junk') and 'Axel', which had the L and E switched. Of course, it doesn't detract from the overall quality of the game.
I'm impressed, personally, and this is one game that I just can't escape. Keep up the good work!