This is pretty fun to play and has been executed well. I like the way some of the sticks of dynamite split in two to spread the fire further, and the icons to indicate offscreen threats is very helpful.
A few minor issues that I noticed:
Firstly, the web version of the game doesn't appear to have any support for scaling. As a result, by default a lot of the main menu is cut off and if you go fullscreen then it doesn't adjust the game size (probably not noticable on 1080p, but on a 4K monitor the game is completely surrounded by massive black borders).
The other thing was that you're forced to submit your time to the leaderboard in order to play again. Personally, I think it'd be better if you either made it optional or have the leaderboard name in the settings and do it automatically.
Apart from that, I thought this was some really good work, well done.