Complete World 1

Defeat 20 enemies by blind-firing while in cover (without aiming with L1/R1)

Complete the campaign on Normal difficulty or higher.

Meet Logan face-to-face in "The Source"

Kill an enemy with a Tetranite Grenade from at least 200 feet away.

Complete mission 7: "The Pit"

Complete mission 6: "Train Robbery"

Kill an enemy by dropping a structure on them.

Complete mission 4: "The Pipeline"

Complete mission 3: "Harvest Season"

Clear Sonic Generations.

Defeat Shadow.

Defeat Silver.