Dead Space 3

Dead Space 3

58 Achievements

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Weedkiller

Weedkiller

Kill 5 Cysts in the Biology Building with a single poison gas cloud.

How to unlock the Weedkiller achievement in Dead Space 3 - Definitive Guide

Weedkiller - 30G

This one is easily skipped over, and is fairly easy. In Chapter 14, right after you get the research lab key card, you will see a group of Cysts as soon as you open the door. This is the ONLY time you can get this!
First, what you are going to do is stasis the first two cysts. Then, you are going to run past them, but watch out, you want these guys to live! For now... So pull their pods that they launch away from them (the pods will also be slowed because of stasis) and launch them at the ceiling or something, as long as it doesn't kill them. Then, turn around and stasis the third one, run past him and safely rid of his (her?) pod as well. As soon as that is done, continue on and do the same for the 4th. Once that is taken care of, you are in the clear. When you get to the end of the hallway, your 5th cyst will be on the wall around the corner (next to the lockers) simply stasis him and run by, no need to take care of his pod. Once this is done, simply continue with the main objective, and soon you will be directed to cleanse the room with the gas. Easy as that!
Also, if at anytime one of those cysts dies prematurely, do not be afraid to restart from checkpoint, as there is a checkpoint literally before you open that door! Have fun!
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07 Feb 2013 04:19

10 Comments
I am glad I could help =]
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By Smiththedude on 09 Feb 2013 08:30
There's a second area to get this a little further on in the paleo area . It's a little trickier though as you have to turn the gas on then run into the booth .
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By sKu MBP on 09 Feb 2013 22:26
There were 6? Wow.. I did not even notice haha
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By Smiththedude on 10 Feb 2013 05:28
Great guide. Worked perfectly 2nd time (my fault for messing it up the first time, haha).
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By m0rph3us17 on 16 Feb 2013 05:02
So, restarting from the checkpoint doesn't mess with the achievement? Because I know that it does for several others.
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By Mr Bosss Nastey on 16 Feb 2013 21:20
No, restarting from checkpoint does not mess anything up. I had to restart a couple of times myself so I can say that from experience.
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By Smiththedude on 16 Feb 2013 21:23
Easy peasy!
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By Jigsaw0097 on 30 Nov 2023 06:45
Damn fine solution, took me a couple tries to get down a good pattern, but it worked pretty quick for me, thanks.
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By Paully05 on 08 Feb 2013 21:41
Is that how you got your achievement sKu? Because I tried both areas, and the second area wouldnt get me my achievement, because the gas cloud releases in two parts. The first cloud kills one or two, and then you go to the booth and release the rest of the gas, and it kills the rest. Whereas the achievement says do it with one gas cloud
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By Smiththedude on 09 Feb 2013 22:47
No I already had it by then thanks to your guide. I experimented a little with stasis and standing as close to the booth as possible before releasing the gas. It seemed possible, but as I said I already had the achievement so I wasn't sure. I didn't notice the 2 part gas cloud so maybe if you're close enough to the booth there wont be a break? You're probably right, I just thought it worth mentioning. There were 6 cysts when I went through the first area btw. 2 on the floor, then 2 on the walls, 1 more on the floor, then a final wall one.
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By sKu MBP on 10 Feb 2013 02:53
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hey i know some people like videos so i found a link seems really easy. just going to point out that doing this achievement solo is easier than co-op.
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09 Feb 2013 13:12

Weedkiller (Secret)
Kill 5 Cysts in the Biology Building with a single poison gas cloud.

The oppurtunity for this achievement will come during Chapter 14. Once you gain key access, you can follow the mission indicator to the "Biology" sector. Once opening the door, you will see small plants along the ground and walls. You will have to make it through this room, without any of them dying. To do this, just walk near them and use statis, then when the spore comes out, grab it using TK. Now aim somewhere safe and shoot the spore to blow it up. Do this for all 5 cysts. Now, at the end of the room, you'll notice that the gas is stuck, so go down the lift, restore power, then come back up and deploy the gas, killing the 5 cysts, gaining the achievement.

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11 Feb 2013 00:20

4 Comments
An excellent guide, Maka! As always.
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By on 15 Feb 2013 21:12
+1. As always, your video guides are excellent.
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By SallyNasty on 23 Feb 2013 22:38
Mama I've done this about 3 times and its not popping.. It has an autosave right before u take the lift and I thought well maybe one died n I didn't realize so I walked backwards and yep all 5 still alive. It wnt pop tho. Is there a time frame maybe? Cuz a few of em had time to reload another "bomb" but they didn't die thts for sure..
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By Nurse Lorax on 06 Oct 2015 02:30
Ok tht was weird/glitchy. All the times it didn't pop I was running from the enemies not killing them, this time after I reloaded I killed everyone down the elevator and back up and it popped lol. Dnt kno y tht was.. Thanks for the vid I got it now
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By Nurse Lorax on 06 Oct 2015 02:39
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Here is my guide from my channel, Toslow Gaming. On chapter 14, you'll given the key to open any door. Go to the Biology lab and you'll find 5 Cysts. Stasis each one before they shoot a bomb and kill themselves. Kinesis the bomb and destroy it from a safe distance from the shooting Cyst. You''l need to do this process 5 times and turn on the pump. Go back up the elevator and start up the chemicals! Make sure you put HD.
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24 Feb 2013 05:07

On chapter 14 when you encounter the cysts you can go past them all without killing them but you need to take it slow and at a sensible pace.

When you go near them and they throw their mine into the air it will typically bounce to the floor killing themselves in the process. To avoid this stasis them when you have alerted one and catch their mine in the air using your TK. Dispose of them against a higher wall or the ceiling etc to ensure you do not kill any other cysts in the corridor.

Can be done in coop here is video going from where you first encounter them up to where the achievement pops. Good luck.
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17 Feb 2013 02:55

Chapter 14. As soon as you open the doors to the Biology building, you are greeted with a hallway of five Cysts (round bomb-spitting things on the ground and wall). You must NOT kill these yourself nor let them destroy themselves (the ones on the ground will do so, due to gravity on the bomb). Approach carefully and quickly kinesis grab the bomb when it is spit out, and toss it somewhere safe. Quickly run past the cyst while it is flattened and repeat until you get to the end of the hallway. Go down the elevator, turn on the sterilizing pumps and go back up. Finally, activate the gas in the console room to unlock the trophy. Video by Powerpyx.

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In the 14th chapter, in the laboratory. Cysts are crap on the floor that spits out exploding things when you walk near it. How to do it correctly so that all 5 Cysts are alive when you can turn on the gas, watch the video:

https://www.youtube.com/watch?v=JmeLkuO_YbE
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06 Feb 2013 18:06

This achievement can be obtained in Chapter 14. Important! To keep 5 cysts alive, you need to use stasis. Here's a video
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08 Feb 2013 15:13