Forza Horizon 3 has 135 achievements worth 3000 gamerscore

Welcome to Your Horizon 0 Celebrate opening your Horizon Festival site by putting on a spectacular Showcase.	10
You're the Boss 0 Expand your Horizon Festival for the first time.	10
One of Us 0 Win your first Exhibition Race as Horizon Festival Boss.	10
Stay on Target 0 Get 3 Stars on a Danger Sign.	10
"Do you even... oh, you do" 0 Get 3 Stars on a Drift Zone.	10
You're Hired! 0 Hire a Drivatar for your Drivatar Lineup.	10
You're Fired! 0 Fill your Drivatar Lineup and fire a Drivatar to make way for another.	20
Racer's Paradise 0 Open a Festival in Surfers Paradise.	20
First Time Buyer 0 Visit the Autoshow and buy your first car.	10
Champ 0 Win your first championship.	10
Tonight We Ride 0 Win your first Street Race.	10
The Architect 0 Blueprint and complete an exhibition.	10
The Player 0 Complete another player's Exhibition Blueprint.	10
I'll Just Take This Now 0 Win your first Midnight Battle.	10
Like a Needle in The Outback 0 Find your first Barn Find.	10
Relic Hunter 0 Restore all Barn Finds.	20
Throwdown 0 Create and complete your first Bucket List Blueprint.	10
Community Crusher 0 Play 10 player-created Bucket List Blueprints.	20
Drive to the Music You Love 0 Sign 4 Radio Stations to your Festival.	10
Screaming through the Valley 0 Open a Festival in Yarra Valley.	20
Bushcraft 0 Open a Festival in The Outback.	20
Maxed Out 0 Fully upgrade a Festival site.	20
YOU MUST CONSTRUCT ADDITIONAL PYLONS 0 Perform 10 Festival Upgrades.	20
Like a Boss 0 Fully upgrade all Festival sites.	20
Best. Horizon. Ever. 0 Complete the Final Showcase.	50
Eat My Dust 0 Complete 10 Convoy Races.	10
Got Ourselves a Convoy 0 Convoy for a total of 100 miles.	10
Life Complete 0 Complete every Horizon Bucket List challenge.	20
Drop in the Bucket 0 Complete 5 Bucket List challenges.	10
Who's Hiding These? 0 Smash all 150 reward boards.	20
I Know These Roads 0 Drive down every road in Australia.	20
This My Jam 0 Take part in 5 Skill Songs.	10
Perks of the Job 0 Obtain a car from the Skill Shop.	10
I Want It All 0 Complete every page in the Skill Shop (excluding temporary perks).	25
5 Star Seller - A+++++ 0 Sell 5 cars via the Auction House.	10
Auction Fever 0 Win a car in the Auction House, then add it to your garage.	10
Welcome to Horizon Online 0 Complete 5 online events across Adventure and Freeroam.	10
Online Adventurer 0 Complete 25 online events across Adventure and Freeroam.	30
Bring a Friend 0 Complete an event in Co-op Campaign.	10
Road Buddy 0 Complete 10 events in Co-op Campaign.	20
Forzatographer 0 Take a photo of 300 cars for Horizon Promo.	20
Aussie Rules! 0 Create and complete a championship featuring only Australian cars.	10
High Roller 0 Spend 1 million Credits on a car.	10
Fly Like a Regal 0 Jump 300ft on the airport Danger Sign using the Reliant Supervan.	10
Life's a Drag 0 Complete a drag race at the Airstrip in every Car Class.	10
Ooh, Shiny! 0 Obtain your first Horizon Edition car.	20
Staying Connected 0 Visit the Forza Hub from the Pause Menu.	10
Mini Boss 0 Reach Level 20.	10
Final Boss 0 Reach Level 150.	25
This. Is. FORZA! 0 Create and complete a Championship with 100+ miles of racing over 10 events.	20
Endurance Hero 0 Create an Exhibition with 25 laps with rolling time of day and complete it against Pro Drivatars.	20
Exhibition Expert 0 Complete an Exhibition at every race route in the game.	20
Horizon Hardcore 0 Complete a championship starting at every race route in the game.	30
Art Director 0 Create a Paint, setup a Tune, and start your Horizon Promo career.	10
Spoiler Alert 0 Fit parts from Rocket Bunny and Liberty Walk.	10
Street Racing Champion 0 Win every Street Race and Midnight Battle.	50
Starstruck 0 Earn at least 1 star on 50 different PR Stunts.	10
PR Superstar 0 Get 3 stars on all PR Stunts.	20
Throw Your Weight Around 0 Get 3 Stars on a Drift Zone in a car weighing at least 2500kg.	10
Backpacker 0 Discover every beauty spot in the game.	20
Forza First 0 Win a race in the Lamborghini Centenario.	20
Clever Girl! 0 Get 3 Stars on 5 different PR Stunts in the 2017 Ford Raptor.	10
Totally meant to do that... 0 Perform a Barrel Roll in any Buggy.	10
Underdog 0 Get 3 Stars at a PR Stunt in a C Class car.	10

Secret Achievements

#Forzathon Cleaning Up The Festival 0 Complete 1000 Races or Snowman Skills	125
#Forzathon See You Horizon Boss 0 Complete 1500 Races or Kangaroo Skills	125
#Forzathon The Final Tour 0 Complete 2000 Races or "Hot Wheels" Skills	125
#Forzathon And Thanks For All The Drifts 0 Complete 2500 Races or Ultimate Skills	125

Forza Horizon 3: Blizzard Mountain

There are 28 achievements with a total of 500 points.

Welcome to Base Camp 0 Open the Blizzard Mountain Festival.	10
Just Getting STARted 0 Earn your first star at Blizzard Mountain.	10
Triple Star Performance 0 Earn 3 Stars at a single route at Blizzard Mountain.	10
Ding Ding 0 Reach Round 2 of King of the Mountain.	10
Final Bout 0 Reach the final round of King of the Mountain.	20
Going Supernova 0 Get every possible star at Blizzard Mountain.	30
And Long May They Reign 0 Complete every single King of the Mountain Race.	20
Frozen in Time 0 Find the Blizzard Mountain Barn Find and Restore it.	10
It's Not Over 0 Complete a Blizzard Mountain Championship.	10
Mountain Mastery 0 Complete every Blizzard Mountain Championship.	30
Hail to the King 0 Win the Kingmaker.	50
Snowboarding 0 Smash every Blizzard Mountain Bonus Board.	20
Winter Wonderland 0 View every Beauty Spot on Blizzard Mountain.	20
Snow and Tell 0 Blueprint a Blizzard Mountain Bucket List Challenge.	10
Needs More Blizzard 0 Blueprint a King of the Mountain race, set weather to "Blizzard" and complete it.	10
Still Never Found That Yeti 0 Drive down every road in Blizzard Mountain.	20
The Ice Breaker 0 Complete a Blizzard Mountain Bucket List.	10
Everyday I'm Shovellin' 0 Complete all Blizzard Mountain Bucket Lists.	20
Chillin' With Friends 0 Complete 20 Online races across Online Freeroam and Online Adventure at Blizzard Mountain.	20
Ice to See You 0 Complete 5 Co-op Blizzard Mountain Races.	10
All Downhill from Here 0 Finish a Mountain Rush Descent race in the 2016 Ford GYMKHANA 9 Focus RS RX in under 2 minutes.	20
What's "Safety"? 0 Beat the Ski Jump World Record (825ft) from a Danger Sign in the 1975 Lancia Stratos HF Group 4.	20
Slip Sliding 0 Drift the 1985 Lancia Delta S4 Group B for 35,000 points in a Drift Zone on Blizzard Mountain.	20
Snowdown 0 Smash 10 Snowmen in the 2016 Nissan Titan Warrior Concept.	20
Personally, I Prefer the Air 0 Pull off 10 Ultimate Air skills in the RJ Anderson #37 Pro 2 Truck on Blizzard Mountain.	20
It's Still Got It! 0 Win a Race with a Blizzard in the 1966 Ford F-100 Flareside Abatti Racing Trophy Truck.	20
Snowboating 0 Get 100,000 Score in one Chain in the 2016 Subaru #199 WRX STI VT15r Rally Car on Blizzard Mountain.	20
Gliding it Home 0 Win a King of the Mountain Race without Snow Tires.	10

Forza Horizon 3: Hot Wheels

There are 29 achievements with a total of 500 points.

Welcome to Horizon Hot Wheels 0 Survive your first drive at Horizon Hot Wheels	10
The Upside Down 0 Acclimatize yourself and complete your first race at Horizon Hot Wheels	10
Track Builder 0 Swap out a stunt for another of your choosing using Stunt Swap Blueprint	10
Leadin' The Way 0 Master a track by earning 3 medals for the first time at Horizon Hot Wheels	10
Speed Boost! 0 Prove you have the chops to unlock A Class Events at Horizon Hot Wheels	20
Floor It! 0 Master A Class Events to unlock S1 Class Events at Horizon Hot Wheels	30
Hope You Can Handle It 0 Unlock S2 Class Events, the final challenge at Horizon Hot Wheels	30
Hot Wheels Champion 0 Hold your nerve to win the Ultimate Hot Wheels Finale	50
Hot Wheels Hardcore 0 Complete all races at Horizon Hot Wheels	30
Hot Wheels Stunt Master 0 Get 3 medals on every Danger Sign, Speed Zone, Speed Trap and Drift Zone in Horizon Hot Wheels	30
Track Star 0 Obtain every medal at Horizon Hot Wheels	30
Founding Year 0 Complete a race in a car built in 1968 on Hot Wheels Islands	10
Collector's Edition 0 Restore the Barn Find on Hot Wheels Islands	10
Challenge Accepted 0 Complete a Bucket List challenge at Horizon Hot Wheels	10
Death Defying 0 Survive every Bucket List challenge at Horizon Hot Wheels	20
Master of Friendship 0 Complete 20 online races across Online Adventure, Co-op or Freeroam in Horizon Hot Wheels	20
Treasure Hunter 0 Smash every reward board at Horizon Hot Wheels	20
Putting that power to good use 0 Score over 50,000 Drift Points in the Hot Wheels Twin Mill in Horizon Hot Wheels	10
Bones Shaken 0 Jump more than 500ft from a Hot Wheels Danger Sign in the Hot Wheels Bone Shaker	10
Drifts for Days 0 Nail 5 Hot Wheels Drifts in the Hot Wheels Ford Mustang	10
Jeep Trick 0 Get 10 Ultimate Loop-the-Loops in the 2016 Jeep Trailcat	10
Ultimate Zen 0 Finish High Speed Highway in the 2016 Zenvo ST1 in under 2 minutes	10
Totally meant to do that too! 0 Land a Barrel Roll in the 2014 Arctic Trucks Hilux AT38	10
Hot Lap 0 Complete the Goliath event in the 2010 Pagani Zonda R in less than 06:30:000	10
CHARGE! 0 Hit 200 MPH in the 1972 Chrysler VH Valiant Charger R/T through a speed trap	10
Wild Card! 0 Win an S1 Class race in the 1932 Ford De Luxe Five-Window Coupe	10
Orange is the New Track 0 Discover every road at Horizon Hot Wheels	20
Time To Get Serious 0 Complete your first Championship at Horizon Hot Wheels	10
Higher, Farther, Faster 0 Put the time in and complete every Championship at Horizon Hot Wheels	30

Forza Horizon 3: Hoonigan Car Pack

There are 10 achievements with a total of 500 points.

A Complete Hoonatic 0 Complete a Championship in every Hoonigan Pack car	100
Born to Hoon 0 Get 3 Stars on 20 PR Stunts in any Hoonigan Pack car	100
Send It! 0 Get 3 Stars on the Hillside Drift Zone in the 1991 Hoonigan Rauh-Welt Begriff Porsche 911 Turbo	25
Light The Tires 0 Win a Street Race in the 1972 Hoonigan Chevrolet "Napalm Nova"	25
Flight Of The Hoonicorn 0 Get 3 Stars on the Surfers Park Danger Sign in the 1965 Hoonigan Ford "Hoonicorn"	25
Air Sick 0 Complete a game of Infected in the 1955 Hoonigan Chevrolet Bel Air	50
Land, Sea And Air 0 3 Star the Gold Mine, Shipwreck and Airport Danger Signs in the 1979 Hoonigan ‘Loki’ K5 Blazer	50
Rockin' Horse 0 Perform 25 Ultimate Drift Skills in the 1992 Hoonigan Mazda RX-7 Twerkstallion	50
Got That Swagger 0 Bank a 300,000 point skill chain in the 1978 Hoonigan Ford Escort RS 1800	50
Squashed Banana 0 Perform the Fruit Salad Combo in a Hoonigan Pack car	25