Thanks for trying. An interactive tutorial sadly didn't fit the time constaint. The text on the game page & in-game tutorial text try to help you understand and introduce it, but of course that won't always work. As can be seen on the tutorial screen, the numbers below the COM and YOU names are the players "hp", referred to as "energy", and the green indicates whose turn it is. I hope this somewhat helped you.
I'll probably do a post-jam version which adresses this and have a proper interactive tutorial.