- Estimated achievement difficulty: 2/10
- Offline: 40/48 
- Online: 8/48 *
- Approximate amount of time to 1000: 150+
- Minimum number of playthroughs needed: Multiple Races
- Number of missable achievements: None
- Do cheat codes disable achievements? No Cheats
- Does difficulty affect achievements? No
- Glitchy achievements: None
- Unobtainable achievements: None
- Extra equipment needed? Kinect for "Look Ma, No Controller!"
- Is there DLC? Yes
Porsche Expansion Pack DLC Roadmap
- Estimated achievement difficulty: 1/10
- Approximate amount of time to 250 1-2 hours
- Glitchy achievements None
*None of the online achievements need you to actually play online. You will need a gold account to access the online features however.
Forza Motorsport 4 is the latest edition of the series. It is the most in depth racing simulator to date and has an abundance of cars, tracks and tuning options which will keep the hardcore racer engrossed for a long time. None of the achievements are difficult but Bucket List and Factory Driver will take a long, long time to get. If you want the full you will need a Kinect device and a Forza Motorsport 3 save game to hand.
Step 1 - Pre Racing achievements
First we will get some of the miscellaneous achievements out of the way.
As soon as you start playing the game you will do a introductory race. When you finish you will unlock Welcome To Forza Motorsport. If you have a save game on your system from Forza 3, you will be prompted to import your save getting you Forza Faithful. If you had any of the cars on this list, you will also get Unicorn Hunter. If you don't there are other ways to get this, there are a few other ways to get it. This thread may give you some ideas.
After buying your first car, create a paint job and save for Painter, and a tuning setup for Grease Monkey.
Place any of your setups, paint jobs or decals on the storefront and sell it for Entrepeneur. If you can't sell one legit, then get a friend to get it off of you.
Now take a photo of your car in all 5 locations in the homespace for On Location.
Visit the Autovista and fully explore any car for Car Explorer. Make sure you click on everything until it pops. Create a car club and share a car with it for Clubbed Up and My Car is Your Car, and create a custom playercard for Here's My Card.
Make sure you visit the message centre on 5 separate days for Daily Rewards.
Not bad, we haven't done a full race yet but already have 12 achievements!
Step 2 - Quick Races and Rivals Mode
If you have a Kinect device, play on Free Play then use the Kinect to steer the car. If you want to play like this for the rest of the game, feel free but it is not reccomended.
Go into quick race mode. Select the SCC Ultimate Aero as your car, and go onto the Old Le Mans track. On the straight, you should be able to get to 240mph for Speed Demon. On the same track reach 88mph in a DMC Delorian for Outta Time.
Next take a lap round the Top Gear Test Track in the Kia Cee'd for Star in a Reasonably Priced Car.
Legendary Battle is awarded for beating a Ferrari 330 P4 with a Ford GT40 Mk II. Start a quick race with the Ford and the Ferrari will most likely be one of your opponents. Win!
After your first race (any type), save the replay then upload it for Show Off.
In rivals mode, you will see Autocross events. Take your time and complete ten of these without hitting a cone for Autocrosser. You will get Rivals Shootout most likely after your first race as the standard rival times you need to beat are really slow.
Post a time in every different Rivals mode and get Born Competitor. They don't need to be good times, just play one of each type of challenge.
Step 3 - Career
Career mode is where you will get most of you achievements. Play through all ten years of season play for 10 achievements worth 275 . There are 6 achievements worth 120 for getting to level 50, these will come through playing through the seasons. You will level up faster by upping the difficulty, assist and damage settings, but play however you are most comfortable with. Try to pick a favourite manufacturer and use that make as much as possible as you will need to get to affinity level 50 with one for Factory Driver.
When you get to driver level 30, you will be given the option of a Ferrari 330 P4. Take this, as there are achievements for owning the 5 most expensive cars in the game, and for owning every Ferrari. For these achievements you will need a lot of credits, or if you want to get them the quick way, you can my tokens with MSP to get them instantly.
You will get Kingpin while playing through career, and will get the Drift, Draft, Pass, Turn and Speed achievements while playing through.
Step 4 - Mop Up
So at this stage, you should have just three achievements left to get. Forza World Tourer requires you to race on every track in the game. You will have raced on the majority of them through the career, but may still have a few left. A full list can be found here. Just do quick races set to one lap for any you have missing.
Bucket List will take a long time to get through, you have to gold medal every single race in every single event. Again, choose the difficulty you are most comfortable with, with everything on easy and all assists on you can't really lose.
You will also still need Factory Driver. Hopefully you will have made a big dent in this during general playthrough, but keep racing with that make of car until you reach level 50.
DLC - Porsche Expansion Pack
Start up an online lobby and set all the AI to easy. Change the track to Test Track Benchmark Layout E, and with 1 lap races. This track is basically a big circle, but just has a small island in the middle of the track. Head immediately left at the start and head for the centre, making sure you go round the island. Each lap/race should take about 15 seconds.
Pick your first car as the 2011 Porsche #45 Flying Lizard 911 GT3-RSR. Just one win for ALMS Dominator. Repeat with one race with the 2003 Porsche Carrera GT for Germany's Supercar.
Next pick the 2010 Porsche 911 Sport Classic. Win 5 times for Throwback. Win 3 times with the 2010 Porsche Panamera Turbo for Backseat Driver, 5 with the 1982 Porsche 911 Turbo 3.3 for Whale Tail and once with the 1973 Porsche 911 Carrera RS for Rennsport Originator.
Next set up a one lap race around Nordschleife in the 2012 Porsche 911 GT2 RS with easy AI, win to get Pieces of Flare.
Now we have the achievements for attaining credits for cars. These credits are cumulative, so don't worry about getting them in one race. Pick Test Track Benchmark Layout A, but this time set it to 15 laps, change the AI to professional and damage to simulation to maximise your profits. You can cut all 4 corner of this course for a guaranteed win.
It may take more than one race to go over 30k but with laps like these this won't take long.
Using the 2007 Porsche 911 Turbo (997) will get you All Spooled Up, the 2007 Porsche 911 GT3 RS (997) forTrack Day Play Toy and the 2008 Porsche #7 Penske Racing RS Spyder Evo for Special Delivery.
Forza 4 is without doubt the best racing simulator about, at least on the 360. None of the achievements are particularly challenging, but expect to be playing a long time to max this one out. The DLC doesn't offer any challenge in regard to achievements, but adds to the game in a big way as there are Porsches everywhere once you have it installed.
[x360a would like to thank Corrupt x360a for this Roadmap]