As someone who's made a kaiju destroying the city game before, this is a pretty damn fun kaiju destroying the city game. There's a really good foundation here for a fantastic arcade game, and it's pretty amazing what you did even with running out of time. I love the monster design and the animations especially! I'd have never thought of combining bone animations with pixel art.
There's a bit of weird glitchiness though, but that's understandable, given you ran out of time. The big two I ran into were that eating mutliple soldiers only had you get the health of one soldier, and that I managed to keep moving and destroyed a building at 0 health.
Overall, the game was still pretty good, and it really deserves to be built into a bigger game.