If I was able to buy some kind of explosive potion at the market I throw that at the dude on the shore and run.
Nindoro throws a takes out a flask, lights a long wick, and throws it at the man crouching by the dock. Unfortunately, the wick falls out right as it reaches him, though the flask still shatters on his back, coating him with an explosive concoction and drawing his attention. He turns just in time to see Mipe vanish in the fog.
Meanwhile, one of his companions is hit by an arrow, dies, and falls overboard, and shortly after another is entangled and charred. The leader also dies in that blast, but the man on shore turns and begins casting a spell of his own, and the fires dies out just as they get to him. This leaves him unprepared for Mipe.
He and Mipe struggle on the dock, evenly matched until Ken's entropic touch causes his muscles to atrophy sharply, and Mipe pushes him off the dock, into the waves.
[Munak can keep her oil]
Ken manages to push a wave on board, washing off the deck, (but there isn't enough to freeze someone in place, just make it slippery if you wanted.)
The assassin on the boat is standing curses in Doviello, throws his dagger and Tsanal, and rolls behind a crate, to pull out another weapon.