"There you go. Good." They gauge the distance to the stairwell, calculate the propable pull of the water and how that will affect their aim, make sure her lantern is clipped somewhere it'll stay put, then say, "Gonna push off in three-- two--" They let go of the bartop with the metal hand, twist to brace their feet on it, and shove off powerfully into the water between them and their destination. Two strokes with the metal arm, flesh one tucked around Pudding just in case her grip fails, and they grab the railing and pull themselves over it, onto the stairs. There's still water moving around them, splashing up to their waists, but Soldat's back is to the rest of the room protecting her from further potential debris, so Pudding is closer to the higher step, and can find purchase with her feet if she looks for it.