Wait, what? Where'd that come from? I put the control keys both in the game description AND in-game tutorial for players to read. And when I was playtesting for hours it worked just fine. Do you mean that you couldn't press attack AT ALL or do you mean that the control keys are unintuitive and should be adjusted? If so, how do you think I should go about it? Press something else to attack maybe?
You don't have to hold 'A'. You just have to press 'A' once and then hold 'Z' to shoot. You will exit aim mode if you press 'A' again. I guess I didn't make it clear. I'll make a better tutorial next time.
Even though I already amped up the speed, enemies taking 4 hits to defeat is still too much? I made it only takes 3 hits in the next version, though. That should fix up this issue. You can also take perks to boost your damage as well.