DEATHLOOP

DEATHLOOP

59 Achievements

21-27h

PS5
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Quantum Solution

Quantum Solution

Kill all versions of Wenjie within a 90-second period. Simple.

1.7%

How to unlock the Quantum Solution achievement in DEATHLOOP - Definitive Guide

Wenjie is found on "The Compex" in the Afternoon and can be found within her laboratory. There's a total of 17 Wenjie's to kill throughout the Lab Annex. Enabling "One Shot Kill" and "Tag Multiple Enemies" in the Gameplay Options menu makes this much easier. Just run through the lab spraying all Wenjie's and turrets with 1 shot kills! If you ran it slower than the 90 seconds you can quit to main menu and reload back into the start of that level to try again.

See my video below for their exact locations:
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22 Sep 2022 01:13

14 Comments
I cant enable one shot, the button is hollowed out and unpressable. How can I enable it?
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By on 23 Sep 2022 13:25
Make sure you’re in single player mode
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By Mojachi on 23 Sep 2022 17:50
e9od, you can only change the "Number of Reprises", "One Shot Kills", and several other settings when you're in your bunker after exiting a level. You can't change them in a level.
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By ICE Faux Pirate on 27 Sep 2022 14:23
I’m unable to change the reprise even at the end of a loop or level, I’m stuck on 2 which is a pain.
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By beets101 on 28 Sep 2022 10:36
Go to main menu and then paused to change options in accessibilities.
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By Hirogen Hunter on 28 Sep 2022 11:28
Does the timer start when you enter the level or kill the first Wengjie? I timed myself on both, and while it’s super close from start of level, I was able to make it under 90 seconds under both situations; especially on first kill.
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By GuyverUnleashed on 30 Sep 2022 03:24
Can confirm the time starts after you start the level at some point. Started my timer when the level loaded and got the achievement at 103 seconds.
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By xXjapandabearXx on 30 Sep 2022 18:21
Right I thought it was after the first kill hence I didn’t get it.
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By beets101 on 01 Oct 2022 14:59
Yet another one that doesn't seem to want to unlock for me...
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By AllOvaMyself on 07 Oct 2022 17:35
Timer starts from killing the first Wengjie as per the excellent video tutorial.

To complicate matters I had to kill Juliana inside with the Wengjies as well but still got it on that second attempt.
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By Captain Heroic on 31 Oct 2022 23:41
I struggled with this one but finally got it when I used the LIMP-10 gun and taking one shot at a time like in the video.
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By PhillipWendell on 21 Nov 2022 21:33
Does it work to lure them into the central area and then depressurize it? Or is it too much of a hassle to unlock the controls and set that up to make it worth it?
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By thanatos8285 on 12 Apr 2023 17:45
@thanatos8285 probably not worth it. Just enable one shot kills and tagging of multiple enemies, run around Wenjie's base shooting everyone with a machine gun. There's plenty of time and it's hard to mess up. I even died once to a turret and still had enough time to unlock it.
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By Renki on 17 Dec 2023 11:06
I had some issues with this one, but managed it by prepping the location. Taking over all detection scanners and disabled the turrets. By that time Julia had shown up and I guess she had alerted the Wengjies as by the time I had killed Julia and they had called down, killing them all and getting the achievement was super easy. Didn't even have to go into the building on the right as all were ok the roof.
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By Sjoeter on 01 Nov 2022 05:58
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This isn’t the hardest trophy, but it can seem a right pain if you try and go ham-fisted on it and just bulldoze your way through.

There are 15 Wenjie’s (That’s what I’ve counted on my play throughs. I’ve seen people suggest there is more though - let me know what you guys have seen yourselves)

3 in the Green Lab
5 in/on the multi-storey blue lab
2 in the red lab (out the back of the tower)
5 in/on the tower

Don’t forget you can use the tower’s depressurisation defence to take out some of the Wenjies inside the tower for you. I deliberately got caught by the top floor sensor then shifted out of the door before the tower locked down.

My route:
3 in the green lab
Through the tower, set off the defences, shift out into blue lab corridor.
Take out the 4 inside the blue lab. Climb to the roof, take out the 5th.
Take out the two on the tower balcony (they don’t get depressurised)
Through the tower again to bottom floor and into the red lab, take out the last two.
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22 Oct 2022 09:03

If you head to The Complex in the afternoon, Wenjie the Visionary will be home, ripe to take down. In fact, she’s probably the first Visionary you’ll come across as she's part of the first proper questline you get given. You’ll quickly notice she’s not normal though, and there are in fact 15 versions of her. In order to get this achievement, you need to kill all 15 in 90 seconds. Quite when the timer starts, we’re not sure, but we assume it’s when the first one goes down.

The strat is simple: grab your preferred guns (we recommend a Strelak 50-50, the HALPS and the MG-1 ‘Pepper Mill’) and load them up with your best trinkets. Trinkets like quicker down-sight movement will assist the HALPS, while more accurate hip-fire will assist the Pepper Mill and the Strelak. From a Slabs perspective, Shift (for mobility) and Havoc (well, for havoc) are the two go-to ones, for sure! Although switching out Havoc for Nexus is a perfectly viable strategy as well. When you’re suited and booted, you’re ready.

The most important aspect of this achievement is your route: you’re basically going to want to start in the left-hand lab entrance (where the HALPS is) and kill the three Wenjies in there. Then, you’re going to want to hit the main room and firstly concentrate on the Wenjies upstairs. Then, when they’re done kill everyone of them on your way to the bottom to kill the pair in the backroom. Then, your final port of call is the side lab (above Wenjies’ quarters). You’ll very unlikely not get it on your first attempt, so if you don’t, head back to the main menu and then try again.

A couple of notes: the Havoc upgrade where damage you inflict heals you is very helpful. Also, pay attention to the balls of light that fall out of a Wenjie as they’ll link to a nearby Wenjie. After a while you’ll start to get red crosshair symbols on your HUD too, so pay attention to them, and finally, shoot the cameras down ASAP so you won’t get depressurised. Do all that and you should be golden.
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This is the hardest trophy of the game.

You can find Wenjie on The Complex, during Afternoon. You need to kill all Wenjies in a strict time limit of 90 seconds. The time is strict, there are many Wenjies and they are located in different areas of her lab. Also, you have to deal with healing and ammo management.

The best way to kill them is to enter from the top entrance (the one on the left, over a little mountain) and start killing them from there. The time will start as soon as the first Wenjie dies. 
A good loadout can be:
  • Slabs: Havoc 
  • Weapon: Purple Strelak 50-50 with Big Box and Perforant trinkets
There is a good video showing you how to do it (thanks to PowerPyx)
 

If you don't get the trophy, simply restart the game from pause menù and try again.

If you still have problems getting this trophy, you could use a trick: The game has some "Accessibility options". You can find them under "Options" > "Accessibility" > then push r1.png. For this trophy, the only good options to select are "guided aim", "1 bullet kill" and put the Loop stress to "Minimum".
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I really hate speed trophies with a time limit. I reviewed thousands of guides and still couldn’t keep up, then I developed the fastest way to travel using the Affect ingot. Just in case, I took the clutch, but I didn’t need it, it’s better to take the Displacement with me instead. Video guide (en)
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16 Feb 2022 15:05

1 Comment
Knocked it out the first time by turning on Instant Death and Lock on Aim in the settings.
He started with a small laboratory where SPASalo lies, then in the central tower he was captured by cameras and caused a depressurization and all the Wenzes in it died. Next, it’s a matter of technology to finish them off in the adjacent two compartments.
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By Badabing on 28 Jan 2023 05:54
I’ll add to the hint above: watch the guides, ok, if you need to find your starting point (1st kill)
but in all scenarios Wenjie will run randomly and therefore the chance of failing the timing is always very high.

from Ingots Affect is best - you will kill every Wenjie faster.

From the keychains I took:

- Glass cannon (for Damage, but minus for Vitality)
- Energy keychain (stay in Affect longer and damage it even more)
- Health keychain (to neutralize the debuff from the “Glass Cannon”)
- Double jump (well, I can’t go without it))

any other ingot is more likely to hinder than help
you need to learn the route and kill them faster
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18 Feb 2022 17:50