GhostControl Inc.

Kinda cryptic but its super easy:

Buy 3 Weapons with the Combo property, equip one to each hunter and in a mission shoot the same ghost.

See Video

Finish a mission before the end of turn 2.

Best done in rare missions where there is only one ghost in the house, just rush at it.

If you click end turn twice, the achievement wont pop.

*In a Tube Station level, push a ghost into the train tracks using a weapon that pushes.

See the video for reference if you are having trouble with this achievement.

People thought this one was gotten by missing three times in a row or by dying, basically everything going wrong with a mission according to Murphy's Law.

But it reality, it is as simple as getting two debuffs on the same hunter at any point in the game.

Some of the debuffs are:

(Cursed, Slimed, Weakened, Stunned)

When going to the hospital, dont choose Heal All, avoid healing debuffs.

The most common debuff is Cursed, a lot of enemies can curse you.

In theory, you can go to a tube station mission while cursed and walk on the tracks to get Stunned and the achievement should unlock.

If that doesnt work, wait until you find a slimeball and just stand near it until you get Slimed.

To get this achievement you need to complete five missions without entering the hospital.

Best done early-game when the enemies are easy to capture.

For this one you need to hire a female hunter, add her to the team and go on a mission with her.

Once the mission starts, the achievement should unlock.

I personally got this with a team of 3 female hunters, so Im not sure if you need just 1 or all 3.

To get these kinds of achievement, you must trap a ghost without shooting at it with any kind of weapon.

Traps that do damage are fine, as long as you don't use a Weapon type object on it.

Each trap has an maximum ghost energy that limits the ghost HP that it needs to have in order for the trap to activate.

As you progress through the game, the traps max energy will increase.

Some traps have a Pain trait that will damage ghosts if the trap is unsuccessful in trapping them, this will be useful to catch them.

You can use the research lab in your HQ to improve traps Pain Trait and Energy Max Levels.

For a trap to activate without shooting the ghost, the ghost must end its turn on the trap, near the trap (if trap has Wide beam trait) or walk into a trap and as long as the ghost current Energy is the same or below the trap's max energy, it will fire. Each trap has a success rate so it might fail even if the other requirements are met.

As for Ghost Tiers, every time you move to a new HQ, the ghost "tier" goes up.

Capturing a Tier 1 ghost will earn you Pacifist

Capturing a Tier 2 ghost this way, will net you Flower Child

Capturing a Tier 3 ghost will get you Ghandi.

The achievements do not stack, so you need to do them separately.

In my playthrough, I captured a Poltergeist (T1), a Slimeball (T2) and a Renderman (T3).

These unlock when you recruit some hunters that are a part of a specific team.

The credits page gives you hints as who those hunters are.
I also got some of the names from the steam forums.

The best time to go for these achievements is after defeating the Tea-Rex.
After you finish the last objective, you will have more than 150k pounds, make a save here and just open the hiring table and fast forward day after day until you get the ones you need. If you run out of money, reload and try again.

As for the achievement conditions for it to pop, I think its two hunters but one of them has to be a specific one.

I marked the hunters I had in my team with a * and I marked the hunter that gave me the achievement with a +.

What this means is that you can get any of the other hunters and if it isnt unlocking, you might need the one marked with a +.

GamersGlobal
Henry Lennard*
Jorge Longer +
Harry Frankle

Team Pixelmacher
Herr Karchke *
Michael Cherdchupan +

Team Spieletipps
Uncle Joe *
Retro Hunter +

Team ASH
Walter Slithead*
Alex Ostrich*
Darren Dredgenaught*
Oliver Bookman*
Massle Hassle +
Grim Face

Team Microsoft
Christina Rede +
Steve Harmful *
Thor Vandal
Catherine Haymos *

Team Bumblebee
Tassman *
El Largo
Parker Jr. +
Feni Liro