I liked it a lot. It's a good sequel to Transubstantiation Synthesis and improves on the things that game has done in pretty much every possible category. There's a good variety of pretty pixelated environments and I fondly appreciate the personality quirks of the drones. The various small effects like the color cycling on the portrait outlines and particle heart rewards are excellent additions. Everything just feels whole and complete.
I especially liked the part where you switch control between the four drones. It reminds me of Gobliiins and I would absolutely love a game that fully focuses on that mechanic.
The sound design is very good. The tracks fit the scenes and there's a lot of attention to detail with the sound effects.
Good use of AI generated art, I don't usually see it applied to any sort of great effect in games, but it fits your project exceptionally well.
Overall, I really enjoy the sort of story-based worldbuilding you're engaging in. I think the pacing was just a little slow at the start for me, but the game definitely picks up steam and goes to all sorts of fun places with it.