A very solid game, I love all the different upgrades and the shooting mechanics. If this was fleshed out a bit, I'd love to see even more upgrades & levels.
The one thing that was odd to me is that you can't swap out your gun without completing a level - like, I was stuck on the second boss, and the only way to change to a better gun was to go back to the previous level and beat it so I could change my loadout.
I also have no clue what this has to do with bugs?
I love the graphics, and the music!