Complete each achievement to get the allotted gamerscore.
| Unlockable: | How to unlock: |
| Coastal Guardian (10) | Fend off the Telmarine ships. |
| Cair Paravel Custodian (10) | Rescue Queen Susan's Horn from the throne room. |
| Gigantic Allies (10) | Defeat the archers that are threatening Cair Paravel. |
| Stemming The Telmarine Tide (10) | Seal the doors and escape Cair Paravel. |
| A Pyrrhic Victory (35) | Escape Cair Paravel with Queen Susan's Horn. |
| Siege Weapon Destruction (10) | Use the giants to destroy the catapults in Cair Paravel. |
| Cave Dweller (10) | Work through the cavern to find a grapple. |
| Father Christmas' Gifts (10) | Explore the treasure rooms and find the Pevensie's clothes and gifts. |
| River Retrieval (10) | Rescue Trumpkin from the water. |
| Feral Forest (10) | Find a safe route through the woods. |
| Ruins Revealed (35) | Complete the entire Cair Paravel Ruins area. |
| Gryphon Flight (10) | Use gryphons to take out the turret sentries. |
| Silent Sentries (10) | Defeat the sentries along the castle walls. |
| Liberation (10) | Rescue Cornelius from the dungeons of Miraz's Castle. |
| Bell Tower Rescue (10) | Rescue Edmund and Trumpkin from the bell tower. |
| Surreptitious Arrival (35) | Complete all of the areas within Miraz's Castle Infiltration. |
