It's Prince vs the King Rat.

The Ratti are another race you'll be seeing in an upcoming chapter, and are Prince's enemy. While Prince comes from a neolithic tribe using handcrafted stone and wood tools, Ratti are scavengers and repurpose man made objects.  This one is using a sword made from a big sewing needle and a fishing hook tied together and a shield made from a bottlecap with thumbtacks through it.  I have no explanation for the morning star on its tail.