Carriage Sabotage weakens Blighter carriages, making chases and street fights on wheels easier. It starts the Ringleader line that cripples the enemy gang.
Carriage Sabotage is entry 13 of 17 in the Ringleader branch, one of the three branches (Ringleader, Insider and Swindler) on the Rooks' 39-upgrade board. It is bought with money and materials, not skill points: £4,500, 50 Metal, 50 Chemicals. Before Carriage Sabotage unlocks you need Medicine Market.
Dull Blades
Faulty weapon shipments reach Blighter strongholds, making their weapons less of a threat.
Ale Heist
Ale carts run through the city; hijack or escort them for cash.
Black Market Affiliation
Gun and throwing knife ammunition costs 25% less at every shop.
City-Wide Craze
Halves the price of hallucinogenic darts.