You will unlock these while playing. Can't be missed.

Complete Chapter 1
Reach the first monolith

Complete Chapter 2
Reach the second monolith

Complete Chapter 3
Reach the third monolith

Complete Chapter 4
Reach the fourth monolith

Almost There
Reach the fifth monolith

Complete Chapter 5
Reach the final monolith

Instigator I
Activate 5 totems

Instigator II
Activate 10 totems

Instigator III
Activate 20 totems

Possessor
Possess a creature 10 times

Wilful
Possess a creature 50 times

Eloheem Master
Possess a creature 100 times

Joining the Fallen
Die 5 times

What a view
Spend 60 seconds on a single vista scene

I got it in one of those dialogs with the walkie talkie. Just wait 60sec before you click.

Fratricide
Force an enemy to kill their ally

Very easy, you will get this in one of the first combats. Just press "Space" and take control over an enemy. Now attack another enemy.

Immune
Use a light enemy to kill a ranged enemy

Also very easy. You will have to do this several times to win a combat. Take control of one of those enemies you encounter in the beginning. Now kill one of those mages.

Tank
Clear a battle zone using only a single heavy enemy

Got this in my first battle, where a tank (the big enemies, which need 2 hits).

Patience
Kill an enemy using a sentry turret in Chapter 3



I think it is not missable. Got it at the location shown in the screenshot. Just make sure that the turret "sees" one of the enemies. It only get killed while you move. So time it right and the achievement is yours.

Quick Learner
Complete Chapter 1 without dying

Well, just don't die ;) I did it easily on my 2nd playthrough.

Old Technology
Give yourself the upper hand in Chapter 2's final battle



Very easy. When you reach the location shown in the screenshot, bring 2 rocks with the giant and put them on the switches. Now get the green crystal and place it on the third switch. 3 enemies should now fall from the bridge.

Discovery
Discover an investigation point

Discoverer
Discover all investigation points


I made a separate guide for the investigation points. Just click on everything that has this pulsing animation and you get the achievement

http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=1267028443

Pure Luck #1
Complete the Chapter 3 generator puzzle first try



The puzzle solution differs from playtime to playtime. For me a simple level reload hasn't helped, but if you press Alt+F4, and start the game again, you will start directly ahead of the puzzle again.





Pure Luck #2
Complete the Chapter 5 plane flame puzzle first try



The puzzle solution differs from playtime to playtime. For me a simple level reload hasn't helped, but if you press Alt+F4, and start the game again, you will start directly ahead of the puzzle again.





Make your way across Chapter 3's crucibles with 15 or fewer button presses



Press A
Walk onto first cauldron
Press A, B
Walk onto second cauldron
Press B, B, A
Walk onto third cauldron
Press A, B, C, B, B
Walk onto fourth cauldron
Press C, C, B
Walk onto the cat walk and continue the level