Well that was unexpected...When I finally got around to having both players armed and I tried to fire an arrow, the combination of buttons I had made it so that chrome closed the tab and moved me to another tab. Maybe a different button scheme for the HTML version might be needed or at least a way to change button configurations.
Normally I would say "Doing multiplayer games for jam is a risk and a challenge since 99% of your audience will most likely be playing alone" but I don't think you meant "player" as in "you require two players" because I found it fun, challenging, but fun to try to do everything myself...Weird at a time especially since at the start of the game WASD is on the right when I expect it to start on the left but overall nicely done.