Put 10 guards to sleep with blowdarts

Use Dawn & Dusk to make time speed forward 30 times.

Complete Main Quest "The Crocodile's Jaws".

Activate a Master ability.

Kill an enemy with the predator bow from more than 60 meters while controlling the arrow.

Complete Main Quest Dream Sequence.

Kill 3 enemies with one hit.

Complete Main Quest "The Scarab's Lies".

Fly out of Chelomey

Reach level 20.

Free 20 Rebels (The Hidden Ones)

Defeat a Phylakes.