Fairly sure this is not optimal, but it works. There may be some empty buys here (i.e. buys that do nothing, and are leftover from previous attempts to solve this).
1st turn
Player 1: Buys Noble Brigand. The rest now have 3 cards left to draw. Players discarded Copper + Estate, players 7-10 discarded 2 estates and gain a copper for it.
Player 2: Buys Embassy, players gain Silver -> Reshuffle, draw Embassy + Silver + Copper + 2 Estates.
Player 3: Buys Embassy, players gain Silver -> Reshuffle, draw Embassy + Silver + Copper + 2 Estates.
Player 4: Buys Masquerade. -> Reshuffle, draw Masquerade + 4 copper
Player 5: Buys Masquerade. -> Reshuffle, draw Masquerade + 4 copper
Player 6: Buys Masquerade. -> Reshuffle, draw Masquerade + 4 copper
Player 7: Buys Embassy -> Reshuffle, draws whatever.
Player 8: Buys Worker's Village. -> Reshuffle, draw Worker's Village + 4 Copper
Player 9: Buys Stables. -> Reshuffle, draw Stables + 3 Copper + Estate
Player 10: Buys Throne Room. -> Reshuffle, draw Throne Room + 4 Copper
Player 11: Buys Jester. ->Reshuffle, draw Jester + 2 copper + 2 estates
2nd turns
Player 1 has 0 cards left to draw and has not reshuffled.
Players 2,3,7 have 8 cards left to draw
Rest have 9 cards left
Player 1: Buys Pawn -> Reshuffle
Player 2: Play Embassy -> Draw 4 Copper, 1 Estate -> Discard 3 estates -> buy KC. After embassy, 3 cards left in draw. so when player 2 draws the next hand -> Reshuffle.
Player 3: Repeat what player 2 did -> buy KC -> Reshuffle
Player 4: Play Masquerade.
8 passes Worker's Village to 9. 9 passes Stables to 10. 10 passes Throne Room to 11. 11 passes an estate to 1. Don't care what the others pass, so let's just say they passed coppers to each other.
Buy Bridge. 2 cards left to draw before the reshuffle after drawing a new hand.
Players 5, 6: Repeat what player 4 did -> buy Bridge
9 passes Worker's to 10, 10 passes Stables to 11, 11 passes estate to 1. Rest pass coppers.
9 passes Estate to 10, 10 passes Worker's to 11, 11 passes Copper to 1. Rest pass coppers.
Player 7: Buys Noble Brigand.
Player 8: Buys Noble Brigand. Players 4,5,6 reshuffle.
Player 9: Buys Noble Brigand. Player 7 reshuffles.
Player 10: Buys Noble Brigand. This totals to discarding 8 cards for player 11, so that player currently has 1 card left to draw and will reshuffle as soon as he/she needs to draw a 2nd card.
Player 11: Play Worker's Village
Play Jester.
Player 1 discards Pawn
Player 2 discards KC
Player 3 discards KC
Player 4 discards Bridge
Player 5 discards Bridge
Player 6 discards Bridge
Players 7-10 discard whatever, and player 11 makes them gain the card instead.
Play TR-Stables. Discard Copper -> Reshuffle -> Draw Pawn, KC, Copper.
2nd Stables -> Draw KC, Bridge, Bridge.
Play Pawn for 1 card, 1 buy. Draw Bridge.
With last action, play KC-KC-Bridge-Bridge-Bridge. Have 12 buys, Provinces cost $0. Buy the 12 Provinces.