Complete the tasks to get the corresponding GamerScore.

Boom Boom - GamerScore 10:
Open the secret door.

A Turn of the Screw - GamerScore 10:
Photograph: A Turn of the Screw.

Desmond's Past - GamerScore 10:
Photograph: Desmond Kelvin's jump suit, Medical cabinet with vaccines and mural.

4 8 15 16 23 42 - GamerScore 15:
Photograph: The numbers on the sealed hatch.

Blackmailer - GamerScore 15:
Convince Locke to help.

Button Pusher - GamerScore 15:
Enter the numbers.

Slave - GamerScore 15:
Photograph: Skeleton in Black Rock.

Showdown - GamerScore 10:
Confront Beady Eyes.

Castaways' Treasures - GamerScore 10:
Photograph: Kate's plane, Charlie's guitar and Locke's wheelchair.

Mapping the Island - GamerScore 10:
Photograph: Blast door map, Blast door map for the hidden entrance and Sayid's cable map.

Dharma Ride - GamerScore 15:
Photograph: Dharma van.

Radzinsky - GamerScore 15:
Photograph: Bloodstain on the Swan ceiling.

Save the Castaways - GamerScore 15:
Prevent the fuel leak from igniting.

Pearl Station - GamerScore 20:
Photograph: Pearl Station emblem.

Staff Station - GamerScore 20:
Photograph: Staff Station emblem.

815 - GamerScore 20:
Discover ALL the memories in Flashback 1.

Sweet Memory - GamerScore 20:
Discover ALL the memories in Flashback 2.

Behind the Glass - GamerScore 20:
Discover ALL the memories in Flashback 3.

Beam of Light - GamerScore 20:
Photograph: Beam of light coming from the hatch.

Crash Survivor - GamerScore 25:
Complete Episode 1.

Hero's Hero - GamerScore 25:
Save Jack.

Locate the Cockpit - GamerScore 25:
Complete Episode 2.

Identity Crisis - GamerScore 30:
Discover ALL the memories in Flashback 4.

Persephone - GamerScore 30:
Discover ALL the memories in Flashback 5.

Whatever it Takes - GamerScore 30:
Discover ALL the memories in Flashback 6.

Via Domus - GamerScore 50:
Complete Episode 3.

Into the Hatch - GamerScore 75:
Complete Episode 4.

Behind the Wall - GamerScore 100:
Complete Episode 5.

Through the Flame - GamerScore 125:
Complete Episode 6.

The Way Home - GamerScore 200:
Complete the game.