Here is the full list of all 37 King of the Bridge achievements.
Walk back the way you came during act one or three.
Have three white pieces slip consecutively.
Capture the black king with a white queen as your revenge cheat.
Capture the black queen by legally moving her on a gift of knowledge.
Unlock the goose ending.
Move a black piece that does not work out of town, out of town as your revenge cheat.
Put the goose back on the bridge as he tries to leave.
Capture a black piece by moving it on a gift of knowledge as your revenge cheat.
Unveil all rulebook pages.
Walk really far during chapter two.
Make the title drop in the menu screen.
Unlock the good ending.
Successfully accuse the troll ten times.
Fail to accuse three cheat moves in a single game.
Leave behind sixteen gifts of knowledge in a single game.
Generate one hundred valorite scraps.
Create two castles in a single game.
Unveil ten rulebook pages.
Successfully accuse the troll for the first time.
Capture two black pieces with one single move.
Unlock the bad ending.
Complete the game in under fifteen minutes.
Complete the game in under ten minutes.
Capture three black pieces in one single move.
Ascend two pawns in a single game.
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.
Hide your character behind the troll after completing the game at least once.
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.
The two kings are the last remaining pieces.
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.