Unmissable. As you near the end of the first level, Stormy Beginnings, you will unlock this after destroying a grate by pushing a crate of gold bars onto it.

Complete the second level, Stormcage Escape, without being detected by the guards or the security lights in order to unlock this. Take your time, learn the guards and lights movements, and you should unlock this easily.

The most difficult section here involves a guard patrolling between two consoles, and another guard facing away from you to the right. Wait for the guard to finish with the two consoles - he will then walk towards the camera. When he turns around and heads back to the console on the right, this is the time when you should make your move. You will have plenty of time to sneak over the boxes and kiss the guard facing away from you so that he can open the door.

If you trip an alarm by standing in the green lights, or if you are spotted and captured by a guard, pause the game and return to the main menu to retry.

During the second level, Stormcage Escape, River will be able to kiss Stormcage guards with her hallucinogenic lipstick by creeping up behind them with and pressing . Do this to six guards, and you will unlock this. There are plenty of guards during the level, and this is cumulative across all playthroughs of the level.

Complete the second level, Stormcage Escape, in under 8 minutes. With the puzzle difficulty set to Easy, this should be fairly straightforward. If not, then replay the level and try to learn the movements of the guards in order to progress quicker and not get caught.

See The Stormcage Redemption for tips on the hardest sections of this area. As an indication of the strictness of this time limit, I was able to get this trophy and The Stormcage Redemption in the same runthrough, so you have plenty of time to be patient and still complete the level in under 8 minutes.

Unmissable. During the third level, London Underground, River and the Doctor will flee through the underground train system away from a battalion of Cybermen. Complete this section and this trophy will unlock once you have sealed the doors behind you, trapping the Cybermen.

Unmissable. At the end of the third level, London Underground, River and the Doctor will split up. As the Doctor, jump across the railway tracks and climb the ladder on the far right. Solve the redirection puzzle here and the action will switch back to River. Run between the three tunnels, using the sonic screwdriver to activate the circuit boxes if you see Cybermen coming towards you in order to electrocute them. Survive until the time runs out, and once the Doctor and River reunite, head all the way to the left and climb the ladder to complete the level and unlock this trophy.

When playing as River during the fourth level, City Streets, use the power shot function (Hold ) of her blaster to disable 5 Cybermen temporarily. You can also do this during the fifth level, Ninth Legion Cyberfactory.

Unmissable. During the fourth level, City Streets, the Doctor will head back in time to Victorian London. Near the end of this section, you must complete a puzzle to alter some blueprints. The trophy will unlock once the puzzle has been completed and you have returned to the present day.

Unmissable. During the fourth level, City Streets, River will need to avoid some Cybermen and hack some consoles in order to open a security door to escape them. The trophy will unlock once the door has been opened and you have escaped through it.

Unmissable. Complete the fifth level, Ninth Legion Cyberfactory, and this will unlock once you have collected the first piece of the Eternity Clock and escaped the factory through the time tunnel.

Finish the fifth level, Ninth Legion Cyberfactory, in under 20 minutes. With the puzzle difficulty set to Easy, this should be fairly straightforward. If not, then replay the level and try to learn the quickest ways to complete each platforming section, and try not to die when the Cybermen are chasing you – this will add to your time.

It is very easy to unlock this trophy, as the time limit is fairly lenient and you should be able to finish the level in under 10 minutes if you are careful. The trap you may fall into is rushing too much, leading you to take risks and get killed by errant Cybermats - take your time, and you will easily be able to unlock this trophy.

Unmissable. Halfway through the sixth level, Old London Bridge, you will lower a drawbridge near where you began the level. The trophy will unlock once the drawbridge is down and you have crossed over it.

Unmissable. Complete the eighth level, Somewhere in Elizabethan London, and this will unlock once you have collected the Stasis Field Generator inside the Silence ship.

Complete the seventh level, Somewhere in Victorian London, in less than 15 minutes. With the puzzle difficulty set to Easy, this should be fairly straightforward. If not, then replay the level and try to learn the movements of the guards and Silurians in order to progress quicker and not get caught out.

I was able to finish this level in under 10 minutes, so the time limit here isn't too demanding. Just don't spend too much time messing around - head straight for the sewers, then get the sonic screwdriver, and head back to the sewers right away. Be careful, as rushing is your enemy and will lead to you running into Silurians and dying, which will add to your time.

Unmissable. During the tenth level, Deep Beneath The Earth, River will have to fend for herself against an army of Silurians using the sonic screwdriver. Use the screwdriver with the right control stick and match the waveforms to disarm a Silurian. Do this five times, and you will unlock this trophy.
 

Unmissable. This will unlock at the beginning of the ninth level, Love A Tomb!, after the Doctor and River reunite.

Complete the section inside the Silence ship in the eighth level, Somewhere in Elizabethan London, without losing sight of the Silence and having to return to the beginning of the section in order to unlock this. Go slowly, and don’t try to rush this section, and you should be fine. If you don't think you're going to make a jump without losing a Silent, then wait until you can. There's no time limit, so take your time and you should be able to unlock this in one go.

You can set the puzzle difficulty to Easy to make the stasis field generator puzzles easier, but this won’t actually affect the movement of the Silence themselves.

Unmissable. Complete the tenth level, Deep Beneath The Earth, and the trophy will unlock.

In order to defeat Vekkis, you will first have to move a lift around a column as the Doctor in order to reach some puzzle consoles. Solve the puzzle, and the action will switch to River. You will have to defeat some Silurians here (See Soundly Beaten) - be careful and make sure to hide behind the shields which raise and fall alternatively.

You can usually defeat one Silurian before the shield falls, so try to beat one and then run for the next shield. Once you have defeated enough, the platforms will raise and you will be able to reach a valve. Turn this, and the action will switch back to the Doctor. Repeat this pattern four times, and Vekkis will be defeated and the trophy will unlock.

River's sections are much more difficult than the Doctor's. Be careful, since if you die, you will have to start the pattern entirely from the beginning, which can be frustrating.

Unmissable. During the thirteenth level, Strategic Withdrawal, you will have to activate three consoles to drop a security field. Once you do this and leave the building, this trophy will unlock.

During the thirteenth level, Strategic Withdrawal, you will play as River and sneak through a Dalek compound. Use her quick-shoot ability (Aim with the right control stick, tap ) to shoot a Dalek in the eyestalk. It will get angry and spin around, unable to see. Shoot five of them in this way (or the same one five times) and this will unlock.

During the thirteenth level, Strategic Withdrawal, you will play as River and sneak through a Dalek compound. Use her power-shoot ability (Aim with the right control stick, then hold until the gun bleeps, then release) to shoot a Dalek in the eyestalk. It will be stunned and unable to move. Shoot five of them in this way (or the same one five times) and this will unlock.

Unmissable. Completing the twelfth level, 545 Years Earlier, will unlock this trophy. The Doctor will come across a statue of himself, and be less than impressed. The trophy should unlock here.

Unmissable. Complete the fourteenth level, Old St. Pauls, and this trophy will unlock as soon as you climb the long ladder at the top after completing the perception filter puzzle.

Unmissable. Complete the fifteenth level, Silence Time Capsule, and this trophy will unlock.

This level involves alternating between puzzle consoles as the Doctor, which are straightforward, and then shooting the Silence as River. Run around the platform, since you won't be able to see all of the Silence otherwise, and don't bother with the power-shoot. Quick-shoot all the Silence until they fall, and once you have repeated this pattern four times, the level will be complete and the trophy will unlock.

Unmissable. Complete the sixteenth level, Inside The Time Lock, and this trophy will unlock. This level and the next will seem to blend into one, but once you have reached the TARDIS for the first time after dodging some Daleks, this trophy will unlock.

Unmissable. Complete the seventeenth level, Dalek Command Node, and once you have hacked a final terminal and teleported the one remaining Dalek away (complete with cries of NO! NO! NO!), this trophy will unlock.

Complete the sixteenth level, Inside The Time-Lock in under 20 minutes to unlock this trophy. With the puzzle difficulty set to Easy, this should be fairly straightforward. If not, then replay the level and try to learn the movements of the Daleks in order to progress quicker and not get caught out.

This is another lenient time limit, which you should be able to complete in under 10 minutes at a stretch, although under 15 is more likely. As with the previous chapters, don't rush the sections where you must dodge Daleks, since dying will just add to your time. Be aware that running past Daleks in the background will make this much easier - as long as you keep moving, they shouldn't be able to hit you.

Unmissable. During the final battle with the Emperor Dalek, there will be sections where you control River. Use her power-shot ability (Aim with the right control stick, then hold until the gun bleeps, then release) to shoot the boss in the eyestalk and this will unlock.

Unmissable. Complete the final level and defeat the final boss to unlock this.

This is another fight in which you will alternate between River and the Doctor. As the Doctor, find the terminal which is in front of the "arm" that is circling the room. Crouch down underneath it, and the Emperor's attacks will not be able to hit you. Solve the puzzle here, and the action will switch to River.

As River, find the Emperor Dalek's eyestalk and power-shoot it (see One in the eye for the good guy). The Emperor's shell will close, and it will rotate around the room. Follow it and shoot it in the eye. This will repeat until the action switches back to the Doctor. This is mostly the pattern for the fight, with occasional trips on the lift up to different levels.

Defeat the Emperor Dalek and claim the last piece of the Eternity Clock, and this trophy will unlock.

A Data Link puzzle is the type in which you must link up tiles with pictures on to join one point to another. The first time you find one of these is in the Stormcage Breakout level, right at the end. With the puzzle difficulty set to Easy, this shouldn’t be difficult.

A Re-router puzzle is the type in which you must change a circuit to light certain lamps. You encounter a lot of these during the Somewhere In Victorian London level. With the puzzle difficulty set to Easy, this shouldn’t be too hard. You can speed up your time here by pressing when you have lit the correct lamps to get the next configuration quicker.

A Mind Map puzzle is the type in which you must spin four discs to create a picture. You first encounter one of these in the first level, Stormy Beginnings, right at the end. With the puzzle difficulty set to Medium, this shouldn’t be too hard.

If you attempt this on puzzle difficulty Hard, here's a helping hand: "On Hard mode, move the "first"/middle circle to the right until the that part of the mind map is correctly aligned. After doing so, scroll up once to the "second" (or third coming from the top) movable circle and move it to the right until the image completes itself." (Credit to Bucket for this handy tip!)

You enter Time Corridors after collecting pieces of the Eternity Clock, like at the end of the Ninth Legion Cyberfactory or Deep Beneath The Earth levels. With the puzzle difficulty set to Easy, this shouldn’t be too hard.

To complete these puzzles, you must use the and buttons in order to rotate the "wheels" of the corridor so that you have a platform in front of you that "matches up" with the platform you are standing on. For example, if you are on a platform made of the bottom left four squares, then you would require one with the bottom right four squares.

Press when you have a matching pair, and then use the left stick to move the Doctor onto the new platform. Continue in this manner until you reach the TARDIS. If you spend too long on one platform and it is struck by three bolts of lightning, then it will fall apart and you must retry.

This all sounds very complicated, but once you actually get to do it, it will make much more sense. You can finish one of these puzzles in just over a minute, even with a few mistakes, so this trophy shouldn't be too hard.

Unmissable. Obtained when the game credits are rolling after defeating the final boss and solving the final Time Corridor.