Ooh boy this is rough. The visuals and to a lesser degree sound effects are good but the game play is borked to hell and back. Enemy spawning feels utterly random, sometimes it's nothing but slimes and you can't build up enough money, other times your weak Gacha Friends get slaughtered by rats. The Gachapon machine placement is awkward, if you're lucky a couple of cheap ones are all really close together you can build up a decent army, if you're unlucky a strong enemy is inbetween the machines and whittles downing your few Friends to nothing.
Most of the issues I and others have brought up could be fixed by just rebalancing the stats and placement of things in the world. What can't be fixed though is the fundamental gameplay. It's just not engaging and mostly amounts to hoping to get lucky, an idle game you could lose to put it bluntly. Maybe if there was more strategy or progression it could be interesting. Even just a few unlockable cosmetics could spice things up. As it stands there's nothing but some medals tied to RNG to interest players.