Back up your own save files first!
1) They can be found at:
D:\SteamLibrary\steamapps\common\How to Survive 2\Data\ in folders Save and Save_History

2) Download my files from:
https://drive.google.com/file/d/1uccjfWE1_PmMQ319jooBS4HKz65Eq4hO/view?usp=sharing
This is what you'll get:

3) Disable Steam Cloud sync!

4) Replace the folders, start the game, then choose Local - Continue - Profile 1

Use these folders:
03.01 fence for pylon
11.01 4th challenge
18.01 before 8th challenge

Up to you if you want to achieve the defence one by one, or go straight to the 8th challenge.
The only problem here you might have, is a zombie turtle. If it spawns, kite it around. Otherwise, I had enough defence system to be idle:


Once done, you will unlock related achievements.
And yes, it's confirmed to be working by another player! :)
From all sides
Finish Kovac's first challenge while keeping the pylon intact.


In Kovac's footsteps
Successfully complete half of Kovac's challenges while keeping the pylon intact.


Kovac's pride and joy!
Successfully complete all of Kovac's challenges while keeping the pylon intact.


The last survivor
Reach the maximum level with your character.


Indestructible fortress
Have the camp at maximum level.

Use this folder:
25.01 Last mission with crapton of resources for crafting
You will have to reload saves to get everything.

5-star chef
Cook every type of recipe.


Make a pumpkin pie:


IF it didn't trigger the food achievement, then you'll have to use folder 24.01 Last meal (need turtle soup), hunt a few alive turtles (there's always one in Clifton - Warring Brothers) and then make a turtle soup.

A+ in potions class!
Prepare every type of potion.


Head down to bottom left to Raymond, where I built the chemistry lab and make the green potion.
It's the only one I haven't made.


Fashion designer
Make every type of armor.


Please note, that you only need to make one knee & elbow pads, not two.


Professional weapon manufacturer
Make every type of weapon.


You DO NOT need to make every weapon, only those from the list below, plus some you already have. If you see number 1 in the centre, then proceed to the next.
If you run out of resources - then you definitely made smth not needed. Reload the saves.
I had enough materials for the crafting.

Copy/paste the list into Steam note, pin above game and slowly make your way down.
The weapons list, originally written by J2B9 at trueachievements.com.
Melee
Hammer
The Bone Breaker
The Deathbringer
The Punisher
The Squeezer
The Culling
The "Bulldozer"

Knives
Combat knives
Split twin knives

Spear
Crafted Javelin

Other
Machete
Candy cane
Crowbar
The "Cold Death"

Ranged Weapons
Firearms
The Ambassador
The Judge
The Peacemaker
Old Tommy
The Negotiator
The Prosecutor
The Oath Keeper
The Fast Spitter
The Mercenary
The Veteran
The Redeemer
Steel Mouth
The Quick Striker
The Distant Lover Lever-action rifle
The Twister Revolver
The Noisy Monster Assault rifle
The Commander Semi-automatic pistol
The Oathbreaker Lever-action rifle
The Eternity Revolver
The Fast Requiem Assault rifle
The Invisible blaster Lever-action rifle
The Emperor Semi-automatic pistol
The Oracle Revolver
The Repeater Assault rifle
The "Regulator" Semi-automatic pistol
The "Butcher" Lever-action rifle
The "Nebulizer" Revolver
The "Chatterbox" Assault rifle

Bows and Crossbows
The Silencer Bow
The Needle Thrower Crossbow
The Protector Bow
The Hardwood Crossbow
The Death Blower Bow
The Shield Piercer Crossbow
The Justicer Bow
The Apocalypse Crossbow
The Razorwind Bow
Swoosh Crossbow
The Whisper wind Bow
The Silent song Crossbow
The "Speargun" Bow
The "Ballista" Crossbow

Use this folder:
25.01 Last mission with crapton of resources for crafting

Complete the last Elite mission from the Radio. You have lots of ammo, potions and guns.
Go get them!


IF it didn't give you "all quests trophy", then go and talk with every NPC, but don't start any mission, and then complete Kovac's "Catch Them All!".

IF you didn't give you "all elite quests", then use folder 22.01 Last elite mission (Leslie) and play Avast! mission.

Otherwise, you should get these:

Elite survivor
Successfully complete all of the elite quests.


The Good Samaritan
Finish every quest.



Weapons will take almost entire chunk of experience, so you will have to reload the save.
Max them out and enjoy grind-free achievements!

Master of survival
Have all "Survival" skills at the maximum level.


Veteran killer
Have all "Weapon" skills at the maximum level.


Marathon man
Have all "Stamina" skills at the maximum level.


Human Swiss army knife
Have all "Special abilities" skills at the maximum level.


Adrenaline junkie
Have all "In Danger" skills at maximum level.


If you wondered what's in the "Having fun, lol" folder... it's me running and hacking one-hit killing zombies. ;)