Incredible game genuinely! Really enjoying it. However, I'm a little stuck, and it might just be me refusing to cash in the Astral Embers, but I have and just wanting to beat the Hungering Flesh. If it helps I am playing with Challenge Mode on.
!!! Spoilers !!!
So the problem is in Corrosion, and either I'm missing something or there might be a small error in the code! From my understanding, it should act as Exsanguination but better, since it can scale up with Poison damage on top of the base 1%/sec. But in practice, it seems to be unable to outpace the healing of the enemy which is just 3 stacks of 1%/sec healing, and only starts dealing damage at about 9 stacks of it (from my understanding this should happen at 4).
Also! When combined with Exsang. it only needs about 3 stacks of Exsang and Corrosion each to start dealing damage. So the possible error in the code I mentioned earlier might be in the damage calculation of Corrosion, maybe it's even using the Poison damage or something else.
Great game! Loving it so far! Also I might have just misunderstood the mechanic, just wanted to give some feedback in case it IS a bug ^^