Haven't defragged anything in a while! This was great.
At first I thought this might be a bit too easy, but I ever increasingly found myself getting boxed in by a virus as I exited the elevator to then get peppered by a fragment behind it. That being said, the tuning was spot on for me, and I was able to finish the game on my first attempt, which is ideal for my taste. The visuals are lovely, nicely consistent and the enemies are well designed.
I did have to click the shoot button throughout; I think the input event was being consumed by movement actions and thus I wasn't able to shoot with the keyboard while strafing unless I clicked, but it's a pretty minor thing in reality.
The written guide was very useful, but I probably would have made it without as I think you communicated everything splendidly in level, enemy and UI design. I'm finding it hard to find too much constructive critique! Perhaps the jingle was a little repetitive?
Overall this is an extremely solid entry, I had alot of fun playing. Thank you