- Achievements
Do the following things to obtain the corresponding Gamerscore points:

20 Points
815	Discover all the memories in Flashback 1.
Sweet memory	Discover all the memories in Flashback 2.
Behind the glass	Discover all the memories in Flashback 3.
25 Points
Locate the cockpit	Finish Episode 2.
Crash survivor	Finish Episode 1.
30 Points
Identity crisis	Discover all the memories in Flashback 4.
Persephone	Discover all the memories in Flashback 5.
Whatever it takes	Discover all the memories in Flashback 6.
50 Points
Via Domus	Finish Episode 3.
75 Points
Into the hatch	Finish Episode 4.
100 Points
Behind the wall	Finish Episode 5.
125 Points
Through the Flame	Finish Episode 6.
200 Points
The way home	Finish the game.

10 Points
A Turn of the Screw	Photograph A Turn of the Screw.
Showdown	Successfully confront Beady Eyes.
Desmond's Past	Photograph
Castaways' Treasures	Photograph, Kate's plane, Charlie's guitar, and Locke's wheelchair.
Mapping the Island	Photograph the blast door map, the blast door map for the hidden entrance, and Sayid's cable map.
Boom boom	Open the secret door.
15 Points
Dharma Ride	Photograph Dharma van.
Blackmailer	Convince Locke to help.
Radzinsky	Photograph bloodstain on the Swan ceiling.
Slave	Photograph skeleton in Black Rock.
Button pusher	Enter the numbers.
4 8 15 16 23 42	Photograph numbers on sealed hatch.
Save the castaways	Prevent the fuel leak from igniting.
20 Points
Beam of light	Photograph beam of light coming from the hatch.
Pearl Station	Photograph the Pearl Station emblem.
Staff Station	Photograph the Staff Station emblem.
25 Points
Hero's hero	Save Jack.

- Easy Fuses
Instead of bartering for Fuses to complete puzzles, use the following trick. After completing the first Fuse puzzle, return to the puzzle, and collect all of the Fuses. These will remain in your inventory, ready for use for other puzzles.