Nice work, especially considering the short time-frame! I couldn't even consider joining with my schedule these days. :(
Your game fits the theme very well. The "controls" work, though it does get quite difficult quickly as the mines start spawning all over.
One thing I'd like to see is a game-over screen with your final score listed. I never caught my best score, as I was too busy trying to survive, and then it would insta-restart when I died. That happened so fast it was hard to tell you lost, aside from the score resetting to 0. My best score was nearing 200 pts.
One note, I can confirm that the cannon particles were not appearing on my browser either. (Firefox on Windows 10)
