It would have been better to been able to hold the spacebar down to fire repeatedly rather than having to press it for each shot. It quickly fatigues the hand by having to press it over and over. Also, I didn't see a good way to exit the game without having to use Task Manager. Also, you would probably get more people to try your game if there was a browser version available instead of having to download it.
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thank you for your comment :) like I mentioned in the end credits scene unfortunately I had only 2 free days so I didn't have a lot of time and it was really rushed. The original plan was to make it a rougelite game where you can buy upgrade cards after each run. And hold to shoot was one of the upgrades in the original plan.. but yeah at the end it was scrapped completely because of the time I had.
And about browser games. I'm an unreal engine developer. Unfortunately there is not option to create browser games in unreal, one of the only downsides of the engine