The Joy Mutant's name is Heartbreak.
A balance patch is in development that tackles those issues. Such as the Paralysis, For the Satan+Lincoln fight, it's more of a strategy problem. Try killing Lincoln first to handle Mike. Because in the project Luncoln doesn't have a second phase, unless you count adding Seen Red and Rage.
Now the skillset of the Rider is being reworked, with some additional changes to make it more powerful. Changing how Focus Shot Crit system works. The base stats of Rider and the afterimages including adding two more specifically for the Rando fight. etc.
Though the Blaze Gear issues is new to me... The classes that Blaze Gear transform into did a boost in Max MP and Magic. So theoretically it should increase damage instead.
Do you happened to have a more personal way to contact? DM via Discord or Game Jolt?