Not being able to heal is brutal. It's very...different from the other challenges I have done. I'm at level 15 and should be able to beat the Mile Sandworm at this level, but I'm going to have to grind to beat Juza. On the other hand, Gy probably won't be as bad, because of Gryz's inherent F3 resistance and high defense (on paper, anyway, but we will see).
Now I have to decide whether to throw a Laco Axe into a shop on Dezolis, because he is stuck with the Laser Axe until endgame otherwise.