there should be a category for completing all of the levels fastest

I've actually routed this game for RTA using the Golden Hammer.

Here's the vid if you are interested in watching:

This run is not legit though because I used a game genie code to keep the golden hammer on death.

It will be very hard to complete a true run since making any mistake can lead to death and loss of the golden hammer.

We do have a category for completing all 100 phases of the game. After 100 phases the game loops from the beginning. The category is called "single loop"