Hi yorky97
I had also tried a run of this game, but I used the Japanese version Godzilla-kun since Godzilla moved faster and also had an additional special weapon. I thought that would improve the entertainment value.
Below is the first WIP I had attempted.
http://dehacked.2y.net/microstorage.php/info/582823596/Godzilla-kun%20%28Japan%29.vbm
Then I learned some tricks and started a second version.
1) I found it is faster to punch boulders twice in succession when moving rather than hitting them once at a time.
2) I also used Godzilla's special attack in stage 2 to save time.
3) The run ends where I tried to luck manipulate the Rodan to cause more damage, which would save time since health counts down at the end of each level.
However, your run is superior to mine in stage 4 in how you stacked those boulders.
I did not get very far, but please feel free to use my updated WIP below for comparison.
http://dehacked.2y.net/microstorage.php/info/39480204/Godzilla-kun%20%28Japan%29%20v5.vbm
Good luck!