Inferior Challenge Box

Scenario rewards available only once a day. You can upgrade your compensation level by clearing the Zombie Scenario without using the box.

• Content: 5 Small Medkits, 5 Large Medkits, 5 Battle Revivals, 5 Round retries
• If you use the box, after the midnight, you can clear Zombie Scenario and re-acquire.

General Challenge Box

Scenario rewards available only once a day. You can upgrade your compensation level by clearing Zombie Scenario without using the box.

• Content: 5 Small Medkits, 5 Large Medkits, 5 Battle Revivals, 5 Round retries + 1 Random Grade 1-3 Weapon Part.
• If you use the box, after the midnight, you can clear the zombie scenario and re-acquire.

Intermediate Challenge Box

Scenario rewards available only once a day. You can upgrade your compensation level by clearing Zombie Scenario without using the box.

• Content: 5 Small Medkits, 5 Large Medkits, 5 Battle Revivals, 5 Round retries + 1 Random Grade 1-3 Weapon Part + 1 Random Grade 2-5 Weapon Part.
• If you use the box, after the midnight, you can clear Zombie Scenario and re-acquire.

Advanced Challenge Box

Scenario rewards available only once a day. The final grade has been reached. Use it to earn rewards.

• Content: 5 Small Medkits, 5 Large Medkits, 5 Battle Revivals, 5 Round retries + 1 Random Grade 1-3 Weapon Part + 1 Random Grade 2-5 Weapon Part + 1 Random Grade 3-6 Weapon Part.
• If you use the box, after the midnight, you can clear Zombie Scenario and re-acquire.

Trivia

• In Hard 9, you can get 16.8 EXP for every minute in the match. Maximum point is 420 with a total of 25 minutes game play.