My completion time was 26 hours. This completion time could be lower if you prepare for the game beforehand. With backing up your safe file for decision related achievements the required playthrough could be decreased to one.

It is quite easy to get the game to 100%. The only ones related to skill, or to some experience, are the timed delivery and the full playthrough without reapair. You can keep playing the game once finished the story.


https://store.steampowered.com/curator/30168383-Average-Achievement-Hunter/

The curator group doesn't mark any game as recommended so it shows useful information about achievements on the store page of the games without influencing the main store page of steam with recommendations + all games sorted to lists based on expected completion times. No point not to follow!:-)

Cloudpunk has only one save slot and working with autosave. The game is saved every time you parking, enter your HOVA again, traveled to another zone, or after you progressed with your quest.

No manual saving is one of the biggest problems of the game, as players like to return to liked conversations to experience it again without replaying the whole game until to that part, or just to choose one different solution for a quest.

The game is saved to:
C:\users\username\AppData\LocalLow\ION LANDS\Cloudpunk\
slot0.sav is the save file.

Username is different for everyone, it is based on what username you added during windows install.

Just copy that save file for whatever saving you want to "save" manually, and whenever you want to return to that point just copy it back to that location. Don't forget to create a backup save for your new save file too, as this method will overwrite your newer save.

There are 2:

The perfect run
Complete the game without repair


Do not repair. At all. Your HOVA can't be destroyed, I tried for 15mins to bump to everything. It became damaged, slower, but no game over because of that.
You can land at repair stations, you can talk with engineers, you can go to Emit (as quest related) you can buy upgrades, just never click on HOVA repair, never click on the field marked on this picture:

It is still easy to get to the end without damages, you can just travel above all traffics. After zoning there are always heavy traffic generated to the location where you land, so just push F button to go right so you can leave the highway fast.

Additional hints:
When you get the Radio Nivalis story achievement, the delivery after will make you pick a new HOVA. Damage your HOVA as much as you can before doing that delivery (as at the end of it you will get a new HOVA anyway) so it will unlock a repair mission. Do not repair during this, but this event also unlocks a new car equipment you can buy at any garage, the wall bumper upgrade. If you owns it your HOVAs will be more durable.

No Pressure
Successfully complete all time sensitive deliveries


There are 4 times events in the game. One of it is awarded with Outrun achievement and not count to this one i think.
The 3 "delivery" required for this:
-When you pick up Huxley at Gallows Row, you need to escape a signal. This is the one usually everyone miss, as you need go always to Caledon area on the same map segment, but before the escape event start you get a NAV point, which leads far away. If you start to follow that NAV point you won't be able to get back to the required location.
-When you with Huxley and Pastha some event will happen, which i don't want to spoil here. Get Huxley to the location in time, enough time, so you shouldn't have any issue.
-The third is the only real delivery for this achievemet. You need to deliver a printed heart for Lifecorp. Timer starts once you pick up the delivery, more than enough time to finish the delivery.


You can get most of the extra story achievements after story finishined, engineer might be an exception as his story related to the malfunctioning city. Please make sure you earned all 3 engineer related story side-achievements before finishing the game. These are the following:
I'm an Engineer
Not sure I'm cut out for this
I quit

As far as i know you can unlock the engineer achievements in any order and so you might get these achievements in different orders.

Engineer achievement could be earned after finishing the story. Credit goes to Mutenear who shared this in the comments:
"The Engineer is still available after the story, for those who want to do all side quests afterwards. :)"

First Delivery
Complete your first delivery job


Unmissable.

Tastier than maggot pizza
Get something to eat


You will have a quest to buy some food. Theoretically missable I think, but doubt anyone would avoid that quest as you automatically consume a food you purchase while this quest is active.

Nothing to see here
Pass a CorpSec security check


Unmissable

Old Friends
Activate Camus in your vehicle


Unmissable

Two roads diverged
Make a decision


You will decide if you want to trash the box which is ticking or deliver it to the metro. Unmissable, no exclusive achievement for different decisions.

His hands are dirty
Get to know Lomo


Unmissable.

He was never slow
Make a decision that saves Never Slow Joe's life


Missable, when delivering to Never Slow Joe then sell the item you get from Joe instead of delivering to Emit. When you done this, then the achievement will be unlocked, but only around the end of the game when you need to go to Emit again.

Radio Free Nivalis
Discover the radio with Camus


Unmissable.

Trading up
Get a new HOVA model


Unmissable.

Wanted for crimes against businessocracy
Flee from CorpSec


Unmissable.

Null Gate
Pass a Null Gate


Unmissable.

I am CORA
Talk to CORA


Unmissable.

Above the Clouds
Enter a Spire above the clouds


Unmissable since 28th April ~2-3am (GMT+1), before that patch the achievement was bugged.
It unlocks when you have a job to deliver something to a CEO.
Now the problem with this, that if you played the game before the patch and you finished the game then you can't enter the Spire again. If you played the game before patch and already passed this part of the game, but not finished yet it is not a problem, as the achievement could unlock once you enter the final decision area at the very end of the game.

CEO
Deliver to a CEO


Unmissable.

Prank
Go through with the prank


MISSABLE, exclusive. When you delivered the order to the CEO, when you about to leave the area Camus will suggest a prank. Do it, before you leaving the area.

Charity lightens the soul
Deliver emergency rations


Unmissable.

Dame
Pick up Huxley


Unmissable.

Mr. Anderson
Get to know the Andersons


Unmissable.

Good Rabbit
We are become death, destroyer of worlds


Missable, exclusive. When delivering for Rubrick you have an option to deliver it or trash it. Choosing the delivery solution for the quest award this achievement.

Useful user comment by Coldblooded:
"It's actually possible to get both the Good Rabbit and Swallowed by the Sea achievements in the same playthrough. If you exit out of the game as soon as you get one of them, the autosave will take you back to before you made the decision when you reload."

Swallowed by the Seas
... as they complain across a thousand shores


Missable, exclusive. when delivering for Rubrick you have an option to deliver it or trash it. Choosing the solution which trash the delivery to the ocean award this achievement.

Useful user comment by Coldblooded:
"It's actually possible to get both the Good Rabbit and Swallowed by the Sea achievements in the same playthrough. If you exit out of the game as soon as you get one of them, the autosave will take you back to before you made the decision when you reload."

Dogs and Automata
Discuss friendship and life with Camus


Unmissable.

Save the life of the life saver
Save the life of a Doctor


Missable, when you need to rescue 3 NPC from the quarantineed zone, then make sure one of them will be the female doctor.

We're a taxi service now
Hi, my name is Rania. I'm a delivery driver. I normally don't take passengers.


Unmissable.

Dolly
Decide Dolly's fate


Unmissable, 2 ways to finish the quest, but no achievement affected by the decision.

Customer Feedback
...


Unmissable, but you will speak with different NPC based on the decisions you made.

Don't drink from the faucet
Buy water for Pashta


You will have a quest to go back to Pashta, and you will also get an optional quest during that, which asks you to buy 5 waters for her. Do it before getting to Pashta. Achievement unlock once the waters are bought.

Outrun
Escape the Undernet Pulse


While at Pastha Control will ask you to leave the area. Not sure if it is missable or not, plenty avaiable time to do so. Unlocks for sure if you not fail the timer.

William's Fate
Decide what happens to William


Unmissable. Quest have 2 solutions, no matter which you select.

Neo Cupid
Deliver a printed heart


Deliver the printed heart. Timed delivery, you need to deliver it in time. Time is more than enough, so you shouldnt fail. If you does, its fail the no pressure achievement.

Decision above the Clouds
...


Unmissable.

No more accidents
...


Unmissable.

A Song about Home
Complete the game


Unmissable.

1. Not sure I'm cut out for this
2. Can I quote you?
3. Postbox of love
4. Summer 76
5. Le Grille

Not sure I'm cut out for this
Meet the Engineer again


Talk with the engineer for the second time, this time at Diamond Hills.

Can I quote you?
Talk to Donn Vee, the reporter for the Inquirer


After you leaving the Spire area, once you delivered to the CEO, for the CEO achievement, down at the elevator you can speak with Donn. Do it for the achievement.

Postbox of love
Bring Douglas the Dating Agency flyer


One of the loots you can gather while exploring is a dating agency flyer. Once you have it speak with Douglas at the marked location.

Summer 76
Return the memory card to Janet Mortaim


Once you found the memory card loot, bring it back to Janet. All the random loot visible on map, I'am not sure where it was but for nivalis exploration it is highly suggested to loot up everything anyway.

Le Grille
Find the Le Grille restaurant


Location marked on the map, you will need a Corpsec Flyer to enter the area.

1. Toxic Loudcaster
2. BlockFourOh
3. Joe Ham, Noodle Man
4. Memory Collector + Second Chances
5. Have a safe word
6. Teko's first location
7. Verbal Martial Artist
8 Metropol Building

Toxic Loudcaster
Get interviewed by the Undernet's hottest loudcast


Talk with Rory Alpha, at the end of the conversation the achievement is yours.

BlockFourOh
Run into a street gang


Next to the Cloudpunk HQ talk with the gang members.

Joe Ham, Noodle Man
Help Joe Ham


The famous Gorgonthoa scene, talk with Joe Ham at the location, he will give you a quest. From there the quest mark will guide you.

Memory Collector
Find 20 Punch Cards


Not tied exactly to the location, but you need punch Cards for Evelin, who is next to your apartment. Once you collected 20 punch cards this achievement will unlock.

Second Chances
Restore Evelin's memories

Evelin is next to your apartment. Collect 3*20 Punch Cards for her to restore his memories.
There are reports this achievement not working currently, asked developers on discord about it, no answer yet. Will update when I'll have new information.
According to steam user Shrike on current version you can get it like this:
"Got Second Chances after taking Pashta to my home and then talking to Evelin (All cards were collected before that quest)."

Have a safe word
Meet Molly


Talk with Molly at the marked location.

Verbal Martial Artist
Have a debate with Glen Bo


You can get to Glen Bo through a closed portal/gate. To open it you need a corpsec flyer, what can be found as looting marked ground loots.

Metropol Building
Find the Metropol Building


Fly close to the building at the location.

1. Neural Mods
2. Sunstone Terrace
3. Speed Racers
4. In a min, Theremin
5. Nihon Outlook Point
6. Easy Money

Neural Mods
Talk to Susie Hark, the Extravert


Talk to Susie at the marked location.

Sunstone Terrace
Discover the Sunstone Terrace in Mochi District


Go to the location marked on the map. Once you parked with your HOVA head to right. Go through the gate to get to the 2nd level, then use the elevator to the third level. The area is where the drug dealer is located:

Speed Racers
Give Mala the trading card


Give the trading card to Maia at the location. Now for this i don't remember if it was a ground loot or received from the Not So Slow storyline npc.

In a min, Theremin
Sell old instruments to Sabra


As ground loot you can find some musical instrument or CD to Sabra. You need to sell only one for the acheivemement.

Nihon Outlook Point
Discover the Nihon Outlook Point


You can reach the area with the elevator.

Easy Money
Find a holocash keycard


You can find the holocash keycard at the marked location. You will get a quest once looted, any solution of the quest unlocks the achievement.

1. Lost and Found
2. Load "" Enter
3. Flirt
4. Braver than I thought
5. Norman
6. Investment Offer
7. Irony or something

Lost and Found
Return a suspicious item to CorpSec


In the same area one of the ground loot is a detonator. Upon looting it you will get a quest with loc info, deliver it to corpsec NPC.

Load "" Enter
Sell ancient computer games to Danya


There are 3 ground loots around the game which can be used on Danya at the location to turn in video games for money. The first time you do this, you will get an achievements.

Flirt
Have a flirty conversation


Main quest will send you to take a coffee. Talk with the NPC there (not the guy which selling the coffee) to get this achievement.

Braver than I thought
Buy a piece of Cherry Pie


Buy a Cherry Pie from cherry pie vendor. Make sure you buy an extra as you need it for another achievement.

Norman
Meet Norman the falcon


Just talk with Norman at the location.

Investment Offer
Meet Jimmy Roll-High


Talk with Jimmy Roll-High at the marked location.

Irony or something
Give Haldo a candy bar


Buy a candy bar from a merchant and then talk with Haldo at the location marked on map.

1. I'm an Engineer
2. Grow a thicker skin
3. He's a robot Andy knows it + Tempus fugit
4. I prefer tarte tatin

I'm an Engineer
Find the Engineer


Talk with the engineer at the marked location.

Grow a thicker skin
Help the Patchwork Man


The Patchwork man (location is on the map) will give you a quest. You just need to buy an item from an NPC close to the Patchwork. Finish it for the achievement.

He's a robot Andy knows it
Have a meaningful conversation with Andy


Talk with Andy at the location.

Tempus fugit
Learn about Teko's past


You need to speak Teko 3 times. This is the last location.
First: Midtown map, number 6
Second: Mercantile District map, number 3
Third: this map (Marrows) number 3

I prefer tarte tatin
Sell a piece of cherry pie to Trixie Dio


Buy a cherry pie on Oldtown map, number 4 then bring one to Trixie.

1. Hiss Club
2. Cardinal communication
3. Can't stop, won't stop
4. A Lead
5. Forbidden Types
6. Erasera

Hiss Club
Discover the Hiss Club


Go to the marked location.

Cardinal communication
Get screamed at by a mad street preacher


Talk with the preacher at the marked location.

Can't stop, won't stop
Meet the rapping android


Talk with Comrade Bop at the marked location.

A Lead
Talk to Raguan


Once you talked with Comrade Bop you will get a quest, so you can talk with Raguan. Do it for the achievement.

Forbidden Types
Make a delivery for Rotriv


Rotric location can be found on map. He will ask you to deliver a package, finish the quest to get this achievement.

Erasera
Receive a lecture from Suto Dore


Speak with Suto Dore at the location marked on map. You need to deliver him to another place. Once arrived, achievement unlocks.

1. Handy!
2. I quit
3. Teko's second location

Handy!
Return Artyom's ring


During your adventure, when you picking up the loots scattered all around (which is also required so you enter all area for all area unlock achievement) you will find an arm. Once you have it go to Artyom and talk to him.

I quit
Meet the Engineer a third time


Talk with the engineer for a third time, this time at Gallow's Row.

Refuel
Refuel your vehicle


Just Refuel your HOVA at any gas station. Achievement unlocks if you fill up your HOVA to max.

Running Clean
Install a Speedbooster


Buy a speedbooster at any garage once it is unlocked.

Holocash
Use a Holocash machine


It could be added as storyline achievement too, because during Huxley quest you need to use holocash terminal, but you can get this before already, as you can find "bankcard" with codes in it or you can get a code during charity achievement quest. Just go to a holocash terminal, use the code, withdrawn money from the associated account and this will unlock.

HOVA Enthusiast
Install all available vehicle upgrades


Purchase all available upgrades (except the cheap color ones) at a garage. Be careful, dont purchase repair accidently while you going for the no repair achievement.
Upgrades unlocked automatically as you progress on the story, wall bumper upgrade unlocks once your HOVA has significant damage.

Almost like Home
Purchase all available apartment upgrades


The achievement was bugged and fixed by a patch on 28th April ~3am (GMT+1). You can get it on your old save if you purchased already everything. Just get back to your aparment and open the tab where you can purchase upgrades. The achievement will unlock at that time.

Nivalis Tourist
Discover all unlockable locations


1. Explore the ground areas carefully.
2. Go through of all roads.

Once done you probably will still miss 2 locations:
1. Lucille's Garage. The repair station north from Mercantile Station. Please keep in mind you need to land to explore this location.
2. In Midtown, fly up high at the bund, then follow the railway to north. This will unlock the Ash Lane location.

After this you should have the achievement, I think there wasnt any other easy to miss location which not linked to achievements, i unlocked the achievement by exploring ground areas, going through all roads and going to that 2 location.

Additional missable locations:

-Londa Ruins which is a massive location with the name in the Oldtown map. No ground area, usually you won't go there while playing the story, but you should get this if you "go through all roads" which is suggested for many missable locations
-The Grundown Ritz - One block to east from the Bund, go close to the huge building there.
-Nook Bar in Fulcrum Disctrict, Oldtown area. It is a small area, small store next to an elevator. You will use that elevator when you going to Huxley's office:

-Franz and Foreman Tower: never thought this could be missable too, there were some ground loots close to it but some had problems to find this too. It is in Mochi District, same ground area where your starter HOVA was stolen. Once parked with your car just get to the other side of the area:

-Shin Bash Sabi Sushi, one of the resturants in Nihon Minorus, on the wester side of Mochi District.

-Gafgary Tunnel, a section of road on the eastern side of Mercantile District, just south of Ochuba.

User https://gtm.steamproxy.vip/profiles/76561197994757076 created a complete list and map for all locations needed for the Nivalis Tourist achievement, here is a link to his guide:

https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=2154620254

Link is placed in the guide with his approval.