Hey, it looks like this is your first game ever, so I'll give you some advice.
First, maybe have some description of what the objective of the game is in the description or in the beginning of the game.
Second, make sure the firing particle effects don't take up almost half the screen. Fighting the bots is hard because you can barely see anything while firing.
Third, make sure it's obvious when something of the enemy type is coming. Nothing is more frustrating than dying to something that you didn't know was there.
Fourth, start the action earlier. I was confused and didn't think there was anything to do until I waited.
Finally, scale the UI with the screen size so that you can see all the text clearly at all times. (Do this in the Canvas' inspector in Unity)
For a first game, it was quite good. Looks like it's also your first game jam, so congratulations!