It takes between 6 and 8 hours to complete the achievements in Far Cry 3 Blood Dragon Classic Edition. You can find a full guide to unlocking all of the achievements in the Far Cry 3 Blood Dragon
The guide uses following color markings: Brown is used to list current coordinates, helpful in finding secrets located in the game world. Orange is used to mark animals which has to be killed to complete hunting trophies (see the corresponding section Animals) Green is used to mark secrets. Blue is used to mark special types of enemies. Far Cry 3: Blood Dragon [cheats] Alien reference Play the "Desperately Saving Susan" Nerd Rescue and go to coordinates X: 479.1, Y: 488.3 to find a Xenomorph egg from Alien behind the nerd you are saving.