Downstab? I didn't even see that was a thing when I played the first time. That's one of my favourite melee mechanics in a platfomer (I think it was my most common attack in Hollow Knight). So I thought I'd give it another shot, see if that made it easier.... and found a bug. First boss, if you beat it while standing on the ledges, the flaming hover effect floats you into the room above, and you get stuck in the floor.