Finally I decided to switch to Superfly on this serial, even as it has no more than three posts left. Any challenge I met here I won't have to face on the regular comics (like those fluids). You'll notice the dungeon doesn't look fully OK (displacement maps don't cause glitches on Superfly but they were easier to work with on Superfly) but as it won't appear again I didn't put as much work on updating it as I did with the characters.
(and yes, Tess was a bad person before, I love the idea of villanous trauma not changing the characters but uncovering their dark sides, as Paul Dini did with Two Face on Batman: TAS)