Here is the full list of all 37 King of the Bridge achievements.
Walk back the way you came during act one or three.
Capture the black king with a white queen as your revenge cheat.
Generate one hundred valorite scraps.
Create two castles in a single game.
Make the title drop in the menu screen.
Move a black piece that does not work out of town, out of town as your revenge cheat.
Capture three black pieces in one single move.
Capture a black piece by moving it on a gift of knowledge as your revenge cheat.
Have three white pieces slip consecutively.
Capture two black pieces with one single move.
Hide your character behind the troll after completing the game at least once.
Walk really far during chapter two.
Fail to accuse three cheat moves in a single game.
The two kings are the last remaining pieces.
Capture the black queen by legally moving her on a gift of knowledge.
Successfully accuse the troll ten times.
Unlock the bad ending.
Leave behind sixteen gifts of knowledge in a single game.
Ascend two pawns in a single game.
Unveil ten rulebook pages.
Successfully accuse the troll for the first time.
Unlock the good ending.
Unveil all rulebook pages.
Complete the game in under fifteen minutes.
Complete the game in under ten minutes.
Successfully accuse the troll without having unveiled the violated rulebook page.
Eat ten white pieces with a single rook.
Win a match with at least ten white pieces remaining.
Unlock all achievements.
Win a match without consecutively moving the same piece twice.
Have the black queen be the only piece to have moved for twelve consecutive turns.
Put the goose back on the bridge as he tries to leave.
Win a match in RAPID mode or higher.
Win a match in BLITZ mode or higher.
Win a match in BULLET mode.
Unlock the ascension ending.
Unlock the goose ending.