Earning the Speed Archdemon trophy in Gran Turismo 7 can seem nearly impossible, especially when first starting out, but there are a few conditions that make it much easier to attain. Before attempting the Speed Archdemon trophy, players will need to grind for credits so they can afford the best possible car for the task. Although there are a few vehicles that could potentially get the job done, the SRT Tomahawk X VGT will work best.
Unfortunately, the SRT Tomahawk X VGT costs 1,000,000 credits in Brand Central, so players will need to play the game a lot to save up and buy the car. Alternatively, players have the option of using Gran Turismo 7's microtransactions to purchase credits for up to $19.99 for 2,000,000. For those that don't want to spend money on credits for this trophy, the in-game currency is earned for pretty much any activity, such as finishing races and completing license tests.
After purchasing the car, players can either attempt the trophy right away or make a few modifications to the vehicle to increase its speed further. Any parts that boost the SRT Tomahawk X VGT's PP will help with completing the trophy. For example, a nitro system can be added to the vehicle under the Extreme Parts tab to increase speed and make earning the trophy easier. Once the car is modified, players will be ready to get the Speed Archdemon trophy.
Along with having the right vehicle, it's also important to choose a track in Gran Turismo 7 that has flat, straight paths and minimal turning. Tracks like the High Speed Ring in Japan or the Special Stage Route X in the Americas will work for the Speed Archdemon trophy. As long as the chosen track gives players enough time to reach top speeds without sharp turns, it can likely be used for this trophy. From the start of a race, it shouldn't take long to reach 600km/h with a straight path.
After choosing the right track, players can work on reaching 600km/h. As soon as the race starts, players will need to hold down the gas and keep it pressed down until they reach the speed goal. This can be difficult to do while still trying to control the vehicle, which is why tracks with straight paths work best. After about 20 seconds of nonstop acceleration in the SRT Tomahawk X VGT, the trophy should be completed.
Overall, the Speed Archdemon trophy in Gran Turismo 7 is just about having enough space to get to 600km/h and finding a car that's capable of reaching such high speeds. Although the SRT Tomahawk X VGT is the best choice for completing the Speed Archdemon trophy, there are a few other cars in Gran Turismo 7 that have a high enough base PP to get the job done if they're customized. The Speed Archdemon trophy is a difficult achievement in Gran Turismo 7, and it will likely take a while to attain.
Gran Turismo 7 is available for PlayStation 4 and PlayStation 5.