Anyone figured out how to get the secret nuclear reactor tech upgrade? (Potential spoiler)

[Sonic Wolfe]

There is a secret upgrade for the nuclear reactor building during investigation in CH4.
But for some reason I managed to get it in my first play through, but not the second time around... anyone figured out what's the requirements to get that?
Like prerequisites upgrades?

I am did a no-accident run with the always keep enough pop for optimal work condition (only triggering the overworked condition once in prologue to get the 20 workers ). Maybe having work condition related accident is a prerequisite?

[Coheed]

I believe it's acquired from the duplicate Tiqqun wreckage, but you need to have the nuclear power station already researched I think.

[Sonic Wolfe]

I have the power plant researched built and running with all upgrades unlocked. Not sure what else you need to unlock that...

Funny I got that upgrade in my first play through, but not this time around...

[resonance]

Ursprünglich geschrieben von Coheed:

I believe it's acquired from the duplicate Tiqqun wreckage, but you need to have the nuclear power station already researched I think.

That is the upgrade for the cell housing. Unless you get two upgrades there, in which case I never got it. What does the one for the NPP do?

[Phat Pidjin]

Maybe you need to have had an accident in the plant? The text is something about "let's not repeat the mistakes we know about" or something like it.

[Sonic Wolfe]

Ursprünglich geschrieben von resonance:

Ursprünglich geschrieben von Coheed:

I believe it's acquired from the duplicate Tiqqun wreckage, but you need to have the nuclear power station already researched I think.

That is the upgrade for the cell housing. Unless you get two upgrades there, in which case I never got it. What does the one for the NPP do?

In my first play-through I did got both. Just not in my current one where I never go to over-worked causing accidents never trigger.

Ursprünglich geschrieben von Phat Pidjin:

Maybe you need to have had an accident in the plant? The text is something about "let's not repeat the mistakes we know about" or something like it.

I suspected so, because I have most of technology upgrades as my first play through when LEAVING the chapter. I have't wake the lion yet... meaning aka I have more researched than before...

[Arbiter]

or maybe it's just random which tec you will gain?

[huangism]

"Unknown structure" point of interest in Chapter 4, first choice, unlocks three-factor auth upgrade for Nuclear power plant - no accidents

[resonance]

Ursprünglich geschrieben von huangism:

"Unknown structure" point of interest in Chapter 4, first choice, unlocks three-factor auth upgrade for Nuclear power plant - no accidents

I did not get any tech from that choice. Even the guides for all choices don't say anything about getting something there (uck you steam and your link removed bullcrap) So if there is a tech there to be had, it has more to it than just picking the first choice.

[huangism]

Ursprünglich geschrieben von resonance:

Ursprünglich geschrieben von huangism:

"Unknown structure" point of interest in Chapter 4, first choice, unlocks three-factor auth upgrade for Nuclear power plant - no accidents

I did not get any tech from that choice. Even the guides for all choices don't say anything about getting something there (uck you steam and your link removed bullcrap) So if there is a tech there to be had, it has more to it than just picking the first choice.

I literally just played chapter 4 and going to Unknown structure gave me the tech. It's a point of interest and objective point. I posted it right after I got it from that event

[huangism]

Ursprünglich geschrieben von resonance:

Ursprünglich geschrieben von huangism:

"Unknown structure" point of interest in Chapter 4, first choice, unlocks three-factor auth upgrade for Nuclear power plant - no accidents

I did not get any tech from that choice. Even the guides for all choices don't say anything about getting something there (uck you steam and your link removed bullcrap) So if there is a tech there to be had, it has more to it than just picking the first choice.

https://steamcommunity.com/sharedfiles/filedetails/?id=2908139297

You are getting mixed up with the cell housing upgrade, first choice for Unknown structure on solar system map. Investigate the wreck, gives you this

[Rithrin]

Ursprünglich geschrieben von huangism:

Ursprünglich geschrieben von resonance:

I did not get any tech from that choice. Even the guides for all choices don't say anything about getting something there (uck you steam and your link removed bullcrap) So if there is a tech there to be had, it has more to it than just picking the first choice.

https://steamcommunity.com/sharedfiles/filedetails/?id=2908139297

You are getting mixed up with the cell housing upgrade, first choice for Unknown structure on solar system map. Investigate the wreck, gives you this

There are two choices you can pursue with this wreck and you can choose them both, or you can leave without choosing any, or even just choose one.

Each option gives you one tech. The first option gives you a Cell Housing tech upgrade, and the second gives you this NPP tech upgrade. It doesn't prevent accidents in the NPP, it just prevents explosions. It's not incredibly useful, since you really shouldn't be allowing any sector to be short on workers, nonetheless a sector with an NPP, but it's there.

[resonance]

I'm aware of what you refer to. I got nothing from investigating it. Guides with the result choice show nothing for investigating it. My point is that there has to be some other factor influencing it as well. Something else you needed to do before, that allows the first choice to give you tech. I did get the cell housing upgrade from dismantling (second choice)

[stupid steam stop removing links to pictures!!!] Have a pic of that same choice but it does not give the tech yours does. Not sure what image sites steam will let me link to since all it does now is auto remove links

Just as an extra bit here: I recently started a new playthrough (do the sphere and other different choices) and this time I decided NOT to help the guys on Mars in the prologue. In Chapter 1, Mars gives me an entirely different scenario now. Instead of Lichter's storage facility, it was now Klain's battle damaged facility and it gives me much less resources but more pods. So maybe you picked a choice earlier in the game that allowed you to get that tech from the first choice where a different choice that I made blocked that tech for me. Might be the same for the drone upgrades achievement. There may be a secret tech that you can only get with the right choices.

[Sonic Wolfe]

Ursprünglich geschrieben von huangism:

"Unknown structure" point of interest in Chapter 4, first choice, unlocks three-factor auth upgrade for Nuclear power plant - no accidents

I know which POI and which choice I should have chosen, but nothing, I did able to get the second upgrade (Cell house) if I dismantle the structure.

Funny enough I got it in my first play through
But For some reason I can't get it in my second (current play through), perhaps because I have 0 accident/death so far by keep the working condition always optimal.

[eqhymay]

Ursprünglich geschrieben von resonance:

I'm aware of what you refer to. I got nothing from investigating it.

Perhaps you did not have a prerequisite tech, such as exoskeletons, or dive suits for the science ship?
I somewhat recall seeing a few in the later chapters that specified the option existed due to the tech.

[resonance]

Ursprünglich geschrieben von eqhymay:

Ursprünglich geschrieben von resonance:

I'm aware of what you refer to. I got nothing from investigating it.

Perhaps you did not have a prerequisite tech, such as exoskeletons, or dive suits for the science ship?
I somewhat recall seeing a few in the later chapters that specified the option existed due to the tech.

I have all those by chapter 2 where you first need them. There is clearly a specific choice that needs to be made at an earlier point that unlocks that upgrade reward for investigating. Like the sphere side quest that starts in chapter 2.