So, for your very first game, congratulations! And even for a 3-day jam the result is remarkable, and for a solo developer, too. I think the mechanic of possessing the enemies is cool, and throwing them down the pit satisfying and quite fun.
Of course there are some things that needs to be fixed, like some bugs (you can walk on the spikes for example), the lack of audio effects, a proper game exit, the legibility of text.
The idea that "you control the enemy" so "you are the enemy" is perhaps a bit stretched, but I will highlight the creativity in my rating.
Good job!