I was inclined to call this a Shoot The Bullet-type format game, then I realised:
There's a Results option on the screen, much like the main games. So, is it a typical game afterall?
No, there's no visible lives system.
...Erm... so how does it even play...?
......Actually, does anyone feel like translating the text on the screenshots at all so we can begin theorizing scoring/gameplay mechanics/etc? Just at a casual glance, the "Level x" is probably connected to the percentile value displayed above it and might have something to do with a PoFV-style bomb charging or similar. I dunno.