Here is the full list of all 18 Pawnbarian achievements.
Conquer all dungeons with the Shogun.
Conquer all dungeons with the Knight Templar.
Conquer all dungeons with the Pawnbarian.
Conquer all dungeons with the Pawnbarian at chain V.
Conquer all dungeons with the Pawnbarian at chain X.
Conquer all dungeons with the Knight Templar at chain V.
Conquer all dungeons with the Knight Templar at chain X.
Conquer all dungeons with the Shogun at chain V.
Conquer all dungeons with the Shogun at chain X.