Recently in-game, the Fire vs. Water event went live on January 4, 2019. Along with the event, there were updates for two Demon Heroes, Nitpick
Unfortunately, we must wait for notes about these changes here as Boss Fight is offline due to the holidays not too long ago. Despite that, I was willing and committed to compile all the noticeable changes for the time being.
We launched a wiki page for the updates and you may take a look here: https://dungeonboss.wikia.com/wiki/Hero_Update_for_Nitpick_and_Icepick
As soon as the official notes are disclosed, we'll update the page for the full list of changes.