First a few tips:
--Save on every piece of solid ground like as you are going for be gentle with her.
--If you don't get kill restart your last checkpoint
--A few soldiers you need to jump to shave off a few seconds so be mindful of that.
The first encounter with a soldier that you need to kill before it spawns is briefly after the fight with Ahrimin. You will jump through wall run and use Elika to get through here and once you hit the final wall you will see the Spawn point, jump as close and run and strike with your sword. That is 1.
When you kill the first, you will start jumping and avoiding the corruption again on the walls, after a few jumps and wall runs with Elika, you will come to number 2.
Number 3 is not hard at all to find once you land on solid ground and kill number 2, turn the camera to your right and you will see another piece of solid ground that is where number 3 will be. Two wall runs and a golden ring will get you there and kill it and you got the third soldier in the bag.
Before you follow the path that you are suppose to go, you can see a pillar in the middle of the room if you look behind it is a solid piece of ground, which is where number 4 is going to be. Be quick getting here sometimes when you hit the pillar, you will be turned the opposite direction wasting valuable seconds to kill this guy.
Soldier number 5 is a real pain in the arse. When descending down the tower you are going to go through a few patches of corruption blobs and wall runs. He will be the second platform that you get to, but there is a trick, you might have already taken too much time getting to him and he has spawned, well thanks to Dust Star and Leaf King from x360a posts before you hit the vertical climbs hit RB and you automatically go into a wall slide, that will shave off a few seconds. Also right before the door going down to the second platform jump and it will land you right next to the spawn point.
Soldier number 6 is after the shape shifter fight, you will drop down the tower some more escape some corruption and climb back up, you will then wall run to a ring grab twice then jump you won’t be able to see this one until you get around the corner and jump to the platform, what I did is jumped then used Elika and I was right next to the spawn point, do that to get a quick attack. If not you might have lost seconds and he will spawn.
Soldier numbers 7 is right after soldier number 6, wall run and start the series of jumps and after you land on the next solid piece of ground he will be there make sure to use Elika again to get really close.
That’s it, just finish the Epilogue and when the credits start to roll, Achievement unlocked.
If you leave negative feedback - please message me and explain.
This is my first detailed solution so help would be good.