Yes, the weakness is permenent, but there are a few ways to get rid of it.
Almost all of which need to be unlocked. He probably doesn't have Glowing Guardian or the Witch yet, and almost certainly doesn't have Jehora Jeheyu. Avoid getting hit by weakening; it's not worth it!
Oh, I see. Thank you. So if the monster is my level, then we attack simultaneously?
Monsters always win in the event of a tie. Nothing in Desktop Dungeons is truly simultaneous, there is always a resolution order.
I do belive the attack priorities are as folliwing (from first to last)
BURNDYRAZ glyph > Enemy first strike > Your first strike > equal or higer leveled enemy normal attack > your attack > Lower leveled enemy attack
Almost, but you're missing the two lowest priority thresholds: slowed monster > slowed player.
The glyph attacks (Burndayraz and Pisorf) are on a completely different attack continuum and have nothing to do with the regular attack logic.
Normally this is true, but if the monster can retaliate against fireballs then this priority matters a lot
. The fact that we veterans didn't know that BURNDAYRAZ had effectively the highest priority in the game is one of the reasons we couldn't solve the Mystera 3 puzzle when it was first released.