Defeat Panda King

Collect some snowy blueprints

Max out all shadow techniques

Learn Slytunkhamen's secret move

Max out all slow motion techniques

Complete the fourth mission

Unsheathe 5 swords from Immortal Skeletaurs without leaving the area.

Have Purple-rarity gear or better equipped in every slot.

Give Claptrap a high-five.

Complete the game in Spartan Mode.

Find out about the Reds' plans.

Kill 10 enemies in a row with Throwing Knives.