One of the more unusual challenges that occasionally appears in Rocket League challenges is “Complete a Custom Training using Randomization.” At first glance, this objective can be confusing. Many players attempt the challenge but fail to trigger completion because they misunderstand how the randomization settings work.

This guide explains exactly what the challenge means, how to complete it, and how to use it as a powerful training method to improve your mechanics.

What is Rocket League Custom Training?

Before diving into the challenge, it is important to understand how Custom Training works.

Custom Training is a mode that allows players to practice specific shots and situations created by the community or by themselves. Each training pack contains a sequence of scenarios where the ball and car spawn in predefined positions so the player can repeatedly practice mechanics such as:

• Aerial shots
• Dribbling
• Redirects
• Saves
• Wall shots

This system allows players to practice situations that might only occur rarely during real matches, making it one of the most efficient ways to improve mechanical consistency.

Training packs can be created, shared, and downloaded by other players through unique codes generated by the game. 

What does randomization mean?

Normally, every attempt starts exactly the same way. The ball and car spawn in the same position each time. However, when you enable randomization, the game slightly changes these conditions.

Randomization can modify things like:

• Ball speed
• Ball position
• Ball height
• Car position
• Car rotation

These changes create small variations so the scenario feels more like a real match instead of a repeated drill.

To Complete a Custom Training Using Randomization, you simply need to finish a training pack while these randomized modifiers are active.

So, how to complete the Rocket League Complete a Custom Training Using Randomization challenge?

Follow these steps carefully to ensure the challenge registers correctly.

1. Open the Training Menu

From the main menu in Rocket League:

1. Select Play
2. Click Training
3. Choose Custom Training

This will open the list of available training packs.

2. Select any training pack by Psyonix

You can use any training pack by Psyonix to Complete a Custom Training Using Randomization. 

If you want to complete the challenge quickly, choose a short and easy pack such as basic striker training or open net shots.

3. Start the training pack

Enter the training pack and begin the first shot.

Once you are inside the training session, you can adjust the settings.

4. Open Training Settings

Pause the game during the training pack and open Training Settings.

Depending on your platform, this is usually done by pressing the pause/options button.

Inside this menu you will see multiple settings that control how the training behaves.

5. Enable randomization modifiers

To Complete a Custom Training Using Randomization, you must enable at least one randomization option.

Options include:

• Ball Speed Modifier – changes the starting speed of the ball
• Ball Location Modifier – moves the ball spawn slightly
• Ball Height Modifier – changes the vertical spawn height
• Vehicle Location Modifier – adjusts where your car spawns
• Vehicle Rotation Modifier – changes the direction your car faces

You only need one modifier active, but you can enable several if you want a more dynamic training session.

6. Restart the Training Pack

After enabling randomization settings, restart the training pack.

This step is important because the new modifiers must be active from the beginning of the pack for the challenge to count.

7. Finish the Training Pack

Now complete all shots in the pack.

Once you finish the final shot while randomization is enabled, the Complete a Custom Training Using Randomization challenge should register.

Fastest way to complete the challenge

If you only want to finish the challenge quickly, use this method:

• Choose a very short striker training pack
• Enable a small Ball Speed Modifier
• Restart the pack
• Score each shot

Many basic packs have 5–10 shots, so the challenge can be finished in just a few minutes.