Nice concept of a game, I could see me playing this with some significant improvements. I think some criticism I have with the game is that the punishment for burning your hands is incredibly lenient, with there effectively being an invisible health bar that I'm gonna assume doesn't regenerate.
The player has no reason to truly move forward other than get upgrades, and it doesn't help that you could hypothetically just sit still for awhile, get a billion of each resource type and then just constantly refuel.