Here's a comprehensive guide on how to unlock Risk of Rain characters not unlocking:

Risk of Rain characters not unlocking can be frustrating, but with this step-by-step guide, you'll learn how to overcome this issue and unlock all the available classes and characters in the game.

The first character that players often struggle to unlock is Acrid. To beat Acrid and unlock him as a Survivor, follow these simple steps:

1. Wait for the 'Free the Chained Creature' Challenge to pop up after you've defeated Acrid. This challenge should appear regardless of whether you make it to the end of your run or not.

2. Open the Shipping Container in Acrid's location by interacting with it. This will unleash the iconic Test Subject, which is a powerful character.

3. Gear up and come back to fight Acrid again if you want to make the fight easier. You can collect items and complete the Teleporter Event to improve your chances of winning.

4. Climb to the top right section of the Sunken Tombs (above water) to access the Shipping Container.

5. Reach the Sunken Tombs by completing the third stage of the game, which is part of the main story progression.

To unlock other characters in Risk of Rain 2, follow these general steps:

1. Complete challenges and unlock new skills and skins for Survivors.

2. Beat the boss and complete stages to unlock more characters.

3. Experiment with different item combinations and strategies to find what works best for you.

With patience and persistence, you'll be able to unlock all the available characters in Risk of Rain 2. Remember that unlocking characters is just one part of the game, so don't get discouraged if it takes a few attempts to beat Acrid or complete other challenges.

By following these simple steps, you'll be well on your way to becoming an expert in Risk of Rain and unlocking all its hidden secrets.

Risk of rain characters not unlocking