My own Boomerang killed me more times than thea monsters! As other guy says, what makes this game really hard is that the boomerang goes infinitely in a loop. If it goes like only 1 loop (1 left and then right and then come back?) then that may lower the difficulty a bit.
I have also encountered a bug where I tapped on "Menu/Home" midway of the game and then I was not able to to tap on the right(shoot).
Since this is early gameplay and there's room for improvement I will be giving this 4 stars or else this is a 3 star game as of all the game breaking bugs and the hardness to the point that we cannot even make it to first upgrade in the game.
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