Thank you so much for your review Nojama! We are happy to hear that you liked the concept of the game and the control choices. We are making the game for mobile so we thought it would be good to stick to using touch controls instead of going for keyboard controls. Before publishing the game for the minijam we too noticed that it was difficult to purchase upgrades from the store while fighting especially as things got faster later on. We will make many design changes before releasing on the play/app store and hopefully we can see you there! :D