The whole game feels so well put together and cohesive! Everything feels like it had a place and reacts to the game world. The visuals are awesome, I love the retro style that feels like it fits perfectly into this kind of game.
The music and sound effects are on point too, music gets me hyped and the explosions are exactly what I'd expect from this type of art style.
As for challenge, I actually discovered not too late into my second run that the best strategy (or at least the one that got me consistently the farthest) was to just stand around next to the drill and not use the jetpack at all. Just aim for fuel and TNT, and that basically was enough to get a pretty high score. I wasn't even really sure what killed me on my last attempt, but overall it was s really fun game and I think you did a great job with it!