Use the phone in Lady De Montford's house.

Release the ghosts from the Array.

Kill 10 enemies in a row in a single Ranged Fury activation.

Kill 250 enemies using Melee Fury attacks.

Defeat a total of 50 enemies

Destroy the Medical CPU Nodes

Find the hidden Wrench

Exit the Medical Healing Suites

Save your captured partner ten times in the main campaign.

Clear a stage with >95% enemies killed

Glide as Knuckles

Collect 3 types of Shields in Sonic the Hedgehog 3 & Knuckles