The Doctor Strange Character & Level Pack Add-on for LEGO Marvel's Avengers has 5 achievements worth 50 gamerscore.
Find a way to freeze Doctor Voodoo during Free Play in any area of the game
Complete the 'All-New All-Different Doctor Strange' level with all Minikits unlocked
Set both Free Play characters as Baron Mordo and Dormammu
Complete the 'All-New All-Different Doctor Strange' level
Complete the 'All-New All-Different Doctor Strange' level after achieving True Avenger status