It is beatable though it does require a fair bit of luck (and/or game knowledge). And of course it goes to "endless mode" after a win so it end right after beating it.
I do like to keep the things somewhat mysterious, not to the level of Isaac, but a least requiring a little bit of experimentation and player learning so that not everything is completely transparent like for example in Slay the Spire.
LOVE gives you a special cargo dice that doesn't fully show the number of it. So it can be a big damage sink but not completely show how much it can take.