This game has serious interface flaws which need to be addressed before I would call it enjoyable, as well as many other issues:
-Huge pixelated text that covers the screen and is near impossible to read.
-Imposed rendering cap of 720p for no apperent reason, with incredibly awkward and unweildy settings.
-Primary button used for multiple things at once means that you can skip important information or navigate away from what youwant to while trying to do other things - like shoot.
-Overused effects domination the already low-res display and make it hard to tell what is going on.
-Sluggish controls. (Not really too bad, and would not be a problem if the above were not true.)
-Good music! But you can listen to it for only a very short amount of time.
*The tutorial is ambiguous.
*You often cannot tell whether you are supposed into fly into a thing of avoid it until you try.
*You have an arbitrary limit of how many 'special drill attacks' you can use, which is at no point brought to your attention,
*and this limit is represented by a completely unrelated text character near the top of the screen.
*Mashing the primary button brings you back to the title screen, not back to the game, after death.
*Respawn text is often ambiguous and changes ever time you see it.
*Generally unclear, hard to read, and confusing interface. Even if it is shiney, shiney does not a good interface make.
Another big issue is illusion of speed, which plagues a lot of games. The background makes it look like you a re traveling incredibly fast, while the things you can encounter move by you much more slowely relative to it. Effects and other shiney things also do not accurately depict speed, so is leads to a confusing gameplay environment where you'd be better off assuming you were not moving, and that things where moving past you at different rates.
Good things about the game? Like I said good music, and fancy effects, but these are used so poorly I cannot claim that they count positively. Under other circumstances they might be selling points, but under these they are merely things which are not terrible.