You must go back to before the Daleks changed time and stop them. This page may contain spoilers
Below is a guide for the level.
The Doctor and Amy end up at Kaalann just before the Daleks arrive.
Collect the wires.
Use the wires to connect the Debris to the generator.
Use the Sonic Screwdriver to power up the generator.
The Daleks enter the room.
Go into the tunnel, a cut scene will tell you to avoid the Varga plants.
Keep walking down the corridor. Make sure you avoid the Varga plants.
At the end there is a gap which you will need to climb down.
When you get to the visualiser room, go to the main console avoiding the Varga plants.
Use the Sonic to restore some power.
Keep going down the corridor until you get to the room with all the Daleks. Keep to the left until you get to the Dalek production facility room.
To the left of the room is a Dalek eye stalk.
Once you have picked up the Dalek eye stalk come out of the room until you get back to the main room with Daleks. Walk left and follow the corridor until you get to a dead end. A Dalek gun is located here.
The Dalek Gun.
Once you’ve got the Dalek gun make your way back to the Doctor
To make the vision disrupter you will need to drag the three components across the forcefield. Take your time.
A cut scene shows the Doctor and Amy going back to the Eye of Time room.
Keep to the side of the room avoiding the Daleks, then run up the slope in the middle is the destroyed Dalek Emperor.
A cut scene shows Amy adding the eye to the emperor.
The Daleks can’t see so they start firing everywhere.
If you walk to the left past the supreme Dalek there is a clear root to the console.
If you go to the left past the supreme Dalek there is a clear root to the console.
Use the sonic to shut down the generators.
Run to the right avoiding the Daleks, then run up the slope and talk to Amy. Don’t waste any time as you don’t have long to complete this section!
The Doctor and Amy jump into the eye, back to the Tardis everything is restored!