Here is the full list of all 12 Lead and Gold: Gangs of the Wild West trophies - there are 7 bronze, 4 silver and 1 gold.
Win 100 Matches.
Kill 3 enemies with a single dynamite blast.
Kill 3 opponents within 12 seconds using fanning.
During a game round, gangmates kill 10 enemies tagged by you.
Be the player delivering the most sacks to base during a round. Repeat 3 times.
Kill 3 enemies caught in your traps during a game round.
Revive 5 gangmates during a single game round.
Play all release maps.
Collect 8 sacks of gold in a Goldfever (COOP) match.
Revive a teammate.
Kill an enemy.
Win a match.