S.T.A.L.K.E.R. 2: Heart of Chornobyl

How many collars are there actually? I got the quest and collected three. But after that nothing happened. Quest is still active, but no markers are shown where I should go next.

Eu aceitei em ajudar, mas será que pode fazer essa conquista depois que zera?

Cestral, supposed to be three. Once you talk to him in the Chemical Plant it should automatically give him the 3 collars. Do you by chance still have the collars from an earlier mission with Richter? May be the reason. For Scherba the three collars are in garbage zaton, and malachite.

Monteiro, I am not sure when you can lock yourself out of this one as it is unconfirmed from what I can research if it is exactly 4 story missions later or a certain point. I believe it is 4 missions after collecting the collars, not accepting to help him.

how to get out of the room? i'm dying and that's it

It is possible to be unable to continue this quest if you have previously collected some collars. It wants me to get the snork collar and that collar was taken from me (along with two others) by Dvupalov during the main storyline. So if you explore a little too much, you can bug this side quest.

Also, I can now confirm you can do this mission up until Down Below as I was going through the endings and skipping this on subsequent playthroughs and it would not fail until Down below which is the point of no return.

so i got 2 collars instead of 1 in the very begining of the quest before meeting the drunk doctor, he removed both from my inventory when i talked to him, am i locked out of the quest?

Maybe. It depends if if removes your orange mission marker for the collars or not. If you need more collars than mission marker locations then you may need to reload an earlier save or wait for a patch. I did collect one extra collar elsewhere in Malachite and it updated the mission but still provided a location on the map for another collar.

i have reloaded my save and gave doc a single collar after talking to richter (got it from the bloodsucker) il see how it goes and update later.

Update! New patch should fix the issues listed above. If any bugs still present, please let me know and I will update guide!

Started the side mission this morning the map is only showing 2 locations
I got one from malachite so that 1 out of 2

And the other location is in garbage the area is blue but I'm certain I already previously killed and collected that collar when i was exploring weeks ago

So I'm locked out of completing this quest

Update 1.1 did not fix this quest if most of your collars have already been taken from you. The side quest still assigns previously retrieved collars.

still havent got the achievement, but i successfully made the quest progress to destroy the interference device part with no trouble.

heres what i think people are doing that is breaking this quest:

at the very begining of the thing when you are told to find a collar in order to speak with dvaplov in the main story, the quest marker will be somewhere in the island zone, where there is a house close to a lake, when you get there you will find 2 collars, one from a bloodsucker that will attack you and one in a dead dog inside the house, do not grab the one from the dead dog, kill the bloodsucker and grab his, talk to richter and go give the collar do dvaplov, later on when the side quest to go for the collars starts Shcherba wont ask for a collar from any bloodsuckers but will demand one from some different mutants, and one of the quest markers will be exactly the dead dog from before (so if you grabed it before you probaly broke the quest, the bloodsucker collar seems the one you need at the beginning of the quest, and the one from the dog must be held to Shcherba later on)

this may happen with collars from other mutants so try your best to not randomly collect collars after they begun to appear to avoid this to happen, at least ignore the collars if you already talked with dvaplov after collecting the first one from the bloodsucker.

and just a warning, make sure to be prepared cause if you going for all collars is a damn one way nightmare, it will take you more than an hour walking across the map and geting fuck3d up, one of the collars you need is from a psychomutant (strongest enemy in the game) your gear and weapons may break, you may run out of ammo, not to mention possible random encounters.

Seen quest through to the end, changed frequency, got call from Doctor. No achievement. Any ideas?

Yeah same here for me Roose!

I even made a save right before the moment you decide what to do, either change frequency, or disable jammer.
I tried both and no achievement :/

I mentioned to destroy them on the guide, but I will specify to not disable for clarity.

I have checked around and yes it is indeed bugged if you collect collars beforehand. If you collect most of the collars before this side quest as Dvupalov takes them all from you at the start of an earlier main mission. There are no more collars to be obtained in my game (I went to the areas of the mutants I already killed) and the only location it shows me is of the snork I already killed.

I think I figured out where we went wrong @Roose.

The achievement description makes it sound like you need to stop the experiment.

So when you get to the jammer and have a choice to either disable it to activate the collars or change the frequency to disable them. You would assume to stop the experiment you should choose to disable them.

However this choice ends the quest there and then. But the other choice makes the quest continue and as mentioned above, you pick back up with it about 4 main quests later, and that is where you put a stop to the experiment.

Could be alot clearer, but oh well 🤷

ZebSan, you need to drink the special vodka Dvupalov gives you when you enter his location.

MikeBut, I am not sure on this as the collars for Richter quest was also bugged (it did not show where he was on the map, so you had to look up info on needing to find him at the boat house nearby). You may be right, as two separate missions require the collars. I have, however, found an additional collar by killing a psuedogiant or chimera and they dropped one (it was in malachite somewhere). Even though I collected it, I still had to go do the Richter quest and collect the collar off the cats even though the mission gave me a checkmark saying I collected a collar.

Cestral, supposed to be three. Once you talk to him in the Chemical Plant it should automatically give him the 3 collars. Do you by chance still have the collars from an earlier mission with Richter? May be the reason. For Scherba the three collars are in garbage zaton, and malachite.

Monteiro, I am not sure when you can lock yourself out of this one as it is unconfirmed from what I can research if it is exactly 4 story missions later or a certain point. I believe it is 4 missions after collecting the collars, not accepting to help him.

Supposed to be 4 missions starting with Dark Times. I did this before next story mission and he says he will contact you later. After dark times, do an act of mercy, legends of the Zone, then Subtle matter and then he contacts you again (or is supposed to).

How many collars are there actually? I got the quest and collected three. But after that nothing happened. Quest is still active, but no markers are shown where I should go next.

Do you know when your supposed to get a message to go to the tunnel? Im on final mission and havent heard anything yet

How many collars are there actually? I got the quest and collected three. But after that nothing happened. Quest is still active, but no markers are shown where I should go next.

Eu aceitei em ajudar, mas será que pode fazer essa conquista depois que zera?

Cestral, supposed to be three. Once you talk to him in the Chemical Plant it should automatically give him the 3 collars. Do you by chance still have the collars from an earlier mission with Richter? May be the reason. For Scherba the three collars are in garbage zaton, and malachite.

Monteiro, I am not sure when you can lock yourself out of this one as it is unconfirmed from what I can research if it is exactly 4 story missions later or a certain point. I believe it is 4 missions after collecting the collars, not accepting to help him.

ZebSan, you need to drink the special vodka Dvupalov gives you when you enter his location.

MikeBut, I am not sure on this as the collars for Richter quest was also bugged (it did not show where he was on the map, so you had to look up info on needing to find him at the boat house nearby). You may be right, as two separate missions require the collars. I have, however, found an additional collar by killing a psuedogiant or chimera and they dropped one (it was in malachite somewhere). Even though I collected it, I still had to go do the Richter quest and collect the collar off the cats even though the mission gave me a checkmark saying I collected a collar.

Also, I can now confirm you can do this mission up until Down Below as I was going through the endings and skipping this on subsequent playthroughs and it would not fail until Down below which is the point of no return.

I have checked around and yes it is indeed bugged if you collect collars beforehand. If you collect most of the collars before this side quest as Dvupalov takes them all from you at the start of an earlier main mission. There are no more collars to be obtained in my game (I went to the areas of the mutants I already killed) and the only location it shows me is of the snork I already killed.

how to get out of the room? i'm dying and that's it

It is possible to be unable to continue this quest if you have previously collected some collars. It wants me to get the snork collar and that collar was taken from me (along with two others) by Dvupalov during the main storyline. So if you explore a little too much, you can bug this side quest.

so i got 2 collars instead of 1 in the very begining of the quest before meeting the drunk doctor, he removed both from my inventory when i talked to him, am i locked out of the quest?

Maybe. It depends if if removes your orange mission marker for the collars or not. If you need more collars than mission marker locations then you may need to reload an earlier save or wait for a patch. I did collect one extra collar elsewhere in Malachite and it updated the mission but still provided a location on the map for another collar.