There are some points where the game becomes really annoying. 1. Control and movement is not that comfortable 2. The limits of the field are not clear. For the left and right side, you'll see the limits as you're close to them. However, you'll never see the limits of the upper and lower sides of the field. 3. With the difficulty of recognising the edges of the field, you can super easily be trapped by only 2 enemies and you'll never be able to move and enemy never stop attacking.