Cool entry!
Gameplay wise, I think you could add some more depth. Moving only in one plane meant that the game didn't have a lot of player choice and the moment to moment gameplay could feel a bit dull at times. I think there's an interesting idea here, in which you sometimes want an object, but at other times you want to avoid it. This element of balancing out your heat is cool, and I think you could design more around it. Maybe there's items with different heat values, maybe your objective is to go through a series of levels as fast as possible and therefore you need to keep your heat as close to the maximum as possible without dying (and then the items with different heat values become more valuable at different moments), maybe some "recipes" require different heat values to be maintained for longer durations. Just some ideas you could implement if you continue to work on the project!
Thematically, I think the idea is solid. It makes sense with the overheating that you'd theme the game around cooking. I think it also offers you some cool ideas to explore in terms of mechanics!
I think the aesthetics feel a bit basic at the moment, but you could also make a pretty charming game if you keep with this art style and just do some more assets, environments, and stuff like that. I think the most important thing here is cohesion.
The sound is a bit barebones, I didn't have any music and the sound effect for both the gasoline and water was the same. Sound can go a long way to making the game feel a bit more responsive and fun, so I think this is an area you could work a bit more in.
Cool entry, keep up the good work!