These are quite straightforward achievements. If you haven't complete every one in this segment I suggest you play the game a little more before the achievement hunt.

• Soap & water
  Clean a mech from dirt and mud.
  
• There's a new mechanic in town
  Buy the mechanic's license.
  
• Where should I put it?
  Buy your first station.
  
• Bonus is mandatory
  Finish all bonus tasks in a job.
  
• Just add a bit of color
  Paint a mech.
  
• Nothing a bit of paint can't fix
  Repaint your workshop.
  
• The dark side
  Finish a job for the Cyb3r M3chs.
  
• Big league
  Finish a job with an advanced mech.
  
• One of the boys
  Finish a job with a unique mech.
  Note: unique means tier 3, aka Wraith, Artemis and Ukiyo. It's not some mech with unique model/description/task etc.
  
• Practice makes perfect
  Earn the max prestige level.
  
• Nothing I can't fix
  Fix each mech type at least once.

You have to complete specific tasks/jobs to unlock these achievements.

• Critical update
  Finish a software replacement job.
  Note: only appears after you purchased Software Station.
  
• Time's on my side
  Finish a time-limited task in a job.
  Note: select such job, and there will be a bar with time requirement to the right, between job description and tasks.
  
• Anything else?
  Finish a job with dynamic tasks.
  Note: usually the payment of a dynamic job is higher than normal ones, that may help you snipe one.

Just... sink more time into the game and you will eventually get it.

• Decorrosion all night
  Remove the rust from 100 parts in the De-rusting station.
  
• Welding all day
  Weld 100 parts in the welding station.
  
• Sheathing all the time
  Fix 100 parts in the electronics station.
  
• Self sufficient
  Create 10 parts in the crafting station.
  
  
• Who wants to be?
  Earn more than $1,000,000.
  
  
• Work it
  Successfully finish 1000 jobs.
  Note: 1000*2min/60 ~=33.3 hours. Speechless.
  Note: Finishing a job without even completing any tasks does not count, I tested it already.
  ****************************************************
  ****************************************************
  | WARNING: Contract does not count towards this achievement! |
  | WARNING: All 1000 jobs must be done in one single playthru! |
  | (other profiles and wiped saves does not count!) |
  ****************************************************
  ****************************************************

You can only get these achievements after unlocking garage.

• Pimp my mech
  Refurbish your first mech.
  
• All your mech belong to us
  Buy and refurbish all mech types.
  Note: you don't have to get all mechs via purchasing, the reward of covert missions also counts. But you will have to make sure all of them are functional. Paintjob is not required.
  PS. The name of this achievement is a nod to that infamous "All your base are belong to us".
  
  
• Ready for anything
  Mount each of the perks at least once.

All achievements under this category requires you to do a certain amount of tier 4 dispatch missions.

The maximum threats for a mission is tied to the total amount of mech you have in your garage. You will need at least 5 mechs to start receiving 3 threat missions, and at least 6 mechs to start receiving 4 threats. The mechs in your garage don't even have to be functional; it is the number of slots you occupied that actually counts.

Tier 3 mechs automatically counter one threat for a specific type of mission. Buy Wraith, install 3 perks to counter 3 threats, and the mech itself will counter the last one.

Well, each noncountered threat reduce the chance of success by 33%. Think twice.

When you initiate a mission, the world map immediately rerolls and generate new missions. Optimal strat would be:
-If there are 4-threat missions, do it. Preferably use Wraith for arena, Artemis for mining and Ukiyo for distress missions.
-If there are 4-threat missions but it's not the 3 pairs of matches / the preferred mech is already on a mission, use other 2 mechs and load them with correct perks.
-If there are no 4-threat missions, pick one with minimum threats and send only one mech. It will reroll missions so you get another chance for another 4-threat one.

• Been there, done that
  Successfully finish each of the mission types with 4 threats.
  
  
• Master of the arena
  Successfully finish 10 "Arena" missions with 4 threats.
  
• Here to save the day
  Successfully finish 10 "Distress" missions with 4 threats.
  
• Fight the power!
  Successfully finish 10 "Illegal" missions with 4 threats.
  
• One man’s trash is another man’s treasure
  Successfully finish 10 "Scavenge" missions with 4 threats.
  
• Journey to the center of the Earth
  Successfully finish 10 "Mining" missions with 4 threats.
  
  
• They never saw me coming
  Successfully finish 10 "Covert" missions with 4 threats.
  Note: the mission is just rare. Hopefully you get this one before the 1000 job achievement.

If you played the game before patch #3 and printed a lot of money using stock market exploit, you should have got this achievement when you continue the game (and found out your suspiciously large amount of shares confiscated by the dev). If you missed the chance, or you are an newcomer, read more to find out how to unlock it the legit way.


The trigger for this achievement is tied to save game loading. If in the save you hold shares more than your rep of that corporation, the game will correct that, give you the achievement and set a flag which will skip the check in any saves derived from the current one.
So there are two problems we need to solve: to trigger the check before it was marked for skipping, and to make the shares you are holding exceeds your rep in a legit way.
Got any ideas?

...
...
...

Alright, just follow these steps:

• Start a new game. You can create a new profile so that you don't have to erase your normal playthrough.
  
• DO NOT save&quit until the last step. We only got one chance per playthrough.
  
• Keep playing until you get the license and global market, then immediately pick one corporation and complete one job for them. You would want to have lowest rep possible with that corporation, so ignore bonus tasks.
  
• Do more jobs to earn money until you can purchase shares of that company equals to your rep to them. Do not do jobs for that corporation, or you will have to earn more money to top off the share.
  
• Now accept a job form the corporation you chose before. complete the task, but intentionally strip some parts from the mech so that the assembly page shows incomplete icon. You can sell those parts and maybe take a loan, since you are going to bail soon after anyway.
  
• Hand in the job. The company will find out that some parts are missing and they will not be happy. You receive a rep penalty. You think the corpo is overreacting and decided to check the stock market. Guess what, your shares are higher than the rep with that corpo now!
  
• Save&quit then continue the game. You will receive the achievement once it finished loading.