10/10, especially for your first ever fully finished game! Incrementals normally get boring or slow after the first bit of gameplay, but the design elements and the story in BIOTOMATA made it fun the whole way through. Good combat system, whenever it started feeling repetitive something shook things up, good writing, good encounter design, well balanced, fun details everywhere, and in some areas challenge for 100%ers! (the stage 2 no daniel run took me the most tries, the final boss is good at dealing with the fortitude poison build)
Overall, loved the game a lot! If there was one thing I would change it would be making the encounters per area a pool with 3-4 enemies to pick from, and making the player unable to see where they were on the bar (aside from the final encounter per area) before a certain perception threshold. This would be to shake things up and make it so players don't necessarily know exactly what and when each encounter is going to be after going through once. Nothing has any problems now, but I think it would be interesting!
Great job on this, I hope you keep making games so I can keep playing them :D