That said, can someone give me a hint about the mutagen puzzle?
highlight to see spoiler:
I have figured out I need to make Exitus-1 from plus/minus genes or proteins or whatever, and I did successfully made it, but is it order-sensitive? Is EP JP etc different than JP EP? If it isn't, and my sequence was correct, how do I even tell it worked. I see some mutagen tanks in the boss room, but they're so far out of the way that It would be almost harder to get to them and destroy them (to release gas??) than just killing the boss itself by cheesing the tentacles from the little hut
-end of spoiler