Invite someone to play through the in-game contact list

Single Player: Kill 10 enemies with every arrow type

Complete 3 of 7 levels on Veteran difficulty

Single Player: Complete 20 hacking challenges

Welcome to the Jungle: Disable the Nanosuit Jammer

Single Player: Save a Nanosuit module package

Complete Tutorial

Completed level 1 of all non-level-specific challenges with a single character

Gunzerked continuously for 90 seconds

I can't even capture it on my camera

Completed all side missions

Reached level 50