Go to time trials and look under the locked levels for the unlock criteria. Most of them are completing certain chapters in the campaign and completing time trials. Unlock all 23 for this achievement.

When engaging an enemy, hit to melee. A police officer takes about 2-3 hits and an armored Swat police officer about 4-5 hits.

Try jumping and kicking (, then ) or sliding and kicking (, then )for easy hits. You can only kill people that are red.

Easy done in the metro level. There is a part where you have to fight 2 police officers and 4 swat members. Try knocking out as much as you can and die. When you restart the area, the enemies will attack you again. Just rinse and repeat. You could also just get this easily if you just play through the story mode but you can use this method if you skipped all the enemies.

Run towards an enemy and when he's trying to smash you with his weapon, press when the weapon turns red and you will disarm him. This is much easier when you're in slow motion (press to activate). You should be able to get this achievement by playing through the story mode.

Every level has 3 hidden bags in it. When you spot a runnermark (the game's logo), there’s a bag nearby. Use this videoguide for exact locations.

The first level in the game. Follow Celeste through the level and the achievement will unlock after the combat training.

Complete The Edge on any difficulty.

Complete Flight on any difficulty.

Complete Jacknife on any difficulty.

Complete Heat on any difficulty.

Complete Ropeburn on any difficulty.

Complete New Eden on any difficulty.

Complete Pirandello Kruger on any difficulty.

Complete The Boat on any difficulty.

Complete Kate on any difficulty.

Complete The Shard on any difficulty.

See "Packrat".

Hard difficulty will unlock once you completed chapter 9 on any difficulty. On Hard, you’ll die faster and have no runner-vision (no red objects).

To be sure, start a new game on Hard. If you use Chapter Select, the achievement might not unlock.

TIP: When attacking enemy's try to lure one and disarm him with . With his weapon you can easily shoot () his teammates.

See "Packrat".

Choose the time trial mode from the menu and select any level. Under the Qualifying Times at the right are the times to beat. Finish faster than the one star time and this will unlock.

Every Time Trial course has three difficulties. One star is the easiest and three stars are the hardest. There are 23 courses, each have three stars to achieve. The total stars are 69. Watching these videos can show the best route for three stars on every course.

See ''Baby Steps''.

See ''Baby Steps''.

*Speedrun Mode unlocks after you beat the game on any difficulty. It's located in the menu above Time Trials*

Complete The Edge under 3:00.

Complete Flight under 6:00.

Complete Jacknife under 11:00.

Complete Heat under 8:00.

Complete Ropeburn under 9:00.

Complete New Eden under 9:00.

Complete Pirandello Kruger under 7:00.

Complete The Boat under 8:00.

Complete Kate under 8:00.

Complete The Shard under 6:00.

In Chapter 6, Checkpoint D, after the sequence about Project Ikarus, you need to escape from the guys who came in the elevator. As soon you have control of Faith, just run around the base you need to climb. The area is large enough to maintain speed. You need maintain 30 seconds in full speed. Try not to take hard turns, if you take each turn softly, you can maintain your speed easily. You're going to have to count it out yourself because the achievement won't unlock until you come to a stop.

Select the Prologue from Chapter Select and start at Checkpoint A. The first fence you jump over (), you can coil up () and then carry on holding down and slide under the pipes.

Run towards a wall and press at the right moment, then press and again and speedvault. A speedvault is when you hurdle a mid-height obstacle perfectly, which makes you gain speed.

Select the Prologue from Chapter Select and start at Checkpoint A. The 2 buildings you're after is the one where you have to cross the pipe and the one right next to it. Run up to the left wall and press to start wallrunning, press to turn, quickly press again to jump towards the other wall, then press to turn, followed by one more time. You should now be on top of the the left building with a new achievement.

Go into Time Trial mode and select Playground Two. Go to the second checkpoint and look right of you for an orange staircase. Now go a little bit forward (keeping the staircase to the right) and you'll see some wood right next to the building to the left of you. In front of that wood there's a fence with a wire. Make a run to the plank, on the end of the plank press to jump toward the building to begin wallrunning, when almost at the fence press again and quickly press to coil over the fence. Then press again to skill roll at the end of your fall. Start the video below at 0:41.

Select the Prologue from Chapter Select and start at Checkpoint A. Pressing right before you land from a high distance will put you into a skill roll.

TIP: When dropping down from the vents (first encounter with enemies), perform a skill roll so you don't take damage.

Select the Prologue from Chapter Select and start at Checkpoint A. There are only two enemies that you'll encounter. At the First enemy, try jumping () and pressing to bodysmash him to the ground. Now move to the left to avoid the second enemies gunfires. Activate Slow-motion with and disarm him with .

See "Test of Faith".

Do this on Easy difficulty, any other difficulty would be just too hard. Melee opponents () or disarm them by pressing when their weapon turns red and then press again to throw away their weapon. To check your progress, press and if the text
''So far, you have not fired a shot at anyone'' appears at the top right, you're doing fine.

NOTE: During Chapter 8, you are required to fire the sniper rifle in order to advance in the Chapter. This DOES NOT interfere with the achievement.

When an enemy is standing next to a wall, approach the wall and press to wallrun. When close to the enemy press and Faith will kick the enemy.

See "Superstar".

A lot of skill and time is required to get a star rating of 90 on all trials. There are 32 time trials (including the Pure Time Trials) for you to obtain up to a 3-Star Rating in each.

The maximum star rating is 96, so there is little room for error.

Some tips for beating the target times:

- Don't always use the most obvious routes, There will be various other routes that can shave many seconds off your time.
- Take advantage of the ability to download the ghosts from the leaderboards.
- Try to plan out your route before you attempt to break the target. It helps if you plan where to jump, when to jump, etc.
- If you get lost at any point during the new trials just look around for coloured blocks (usually red, purple, pink, yellow). These are the slowest, but easiest routes to follow.

Check THIS thread for videos that may be helpful for the Time Trials.