Very ambitious to create a MOBA style game for a game jam, respect! I think the game still needs some work, but it is a good start. Many of the MOBA elements are there, but balancing it and making it feel responsive will need some additional work. The first thing I would change are the controls. Either you go with mouse-only moving and aiming like in MOBA games or at least with keyboard movement and mouse aiming. Then the next thing I would add is a leveling / XP system. Still think it is a very ambitious project and I always recommend to do small games and not aim for AAA style games, because it is very hard to get the same experience out of it.
Anyway, a good start and I am impressed how many of the elements you were already able to put in your game. Congratulations!