The Mark of the Assassin Add-on for Dragon Age II has 5 trophies - 2 bronze and 3 silver.
Tallis joined the party. ("Mark of the Assassin" downloadable content)
Lured and killed an alpha wyvern near Chateau Haine. ("Mark of the Assassin" downloadable content)
Evaded vault security in Chateau Haine. ("Mark of the Assassin" downloadable content)
Disarmed the fire traps in Chateau Haine's vaults. ("Mark of the Assassin" downloadable content)
Defeated Duke Prosper, with or without Tallis. ("Mark of the Assassin" downloadable content)