Alekhine's Gun
28 Achievements
Legendary
Complete the game without killing except for assassination targets
1.1%
How to unlock the Legendary achievement in Alekhine's Gun - Definitive Guide
This trophy is easily the most demanding in the game. As it states, you have to complete every mission in the game by assassinating ONLY the targets.
To do this will mean you will need to play a stealthy, clean game. You can be spotted, just don't get killed or kill anyone yourself or you'll need to replay that particular mission. Just ensure you don't kill anybody that's not a target and you'll be fine. Video links below shown how to complete each mission with a 'Ghost' rating which is not necessary for this trophy but by default meets the requirements for this trophy. Note that the first video, if followed correctly, will also bag you a bunch of other trophies which will have been referenced from the respective trophy descriptions:
Mission 1
Mission 2
Mission 3
Mission 4
Mission 5
Mission 6
Mission 7
Mission 8
Mission 9
Mission 10
Mission 11
Each level can have up to four assassination targets that are part of your objectives (Level 10, ‘Check and Mate,’ doesn’t have any). Both on your compass and when you view your map (), your targets are identified by a number in a circle.
To unlock this achievement, you must kill only your targets in each of the 11 levels, no one else. There are multiple ways to do this for each target, so you must be patient and wait for the perfect opportunity as to not alert anyone else (because if you do, you might end up killing them as well).
If you feel the need to incapacitate other enemies besides the target, there is a non-lethal way that does not count as a kill. First, make sure you are not seen, as others might be alerted. Second, you can non-lethally take down an enemy by using chloroform. To equip chloroform, press . To use it, when standing behind a target, hold and press to render then unconscious. Make sure you hide the body so it isn’t discovered.
Below is a YouTube playlist showing each level with the player just killing their targets. Credit goes to Wasim.
https://www.youtube.com/channel/UCHw7aa9fexZ1vcDJCnX9Xww/videos?shelf_id=0&sort=dd&view=0
You need to throw away this weapon, to do this you need to press L1 + R1 and in the inventory reset the unnecessary weapon using a square.
In general, the number of kills at the end of the mission should correspond to the number of kill targets.