Physics like these in games usually can end up going haywire, but aside from an odd occurrence where my tank was propelled forward unnaturally due to a chaotic load, the physics mechanic held up great! Great job on that. The ending was quite the treat, though it's a shame the game ran a bit laggy as the big reason why I like small indie games is that they are usually minimal in the computational requirements department. Regardless, 9.9/10 game!