In Call of Duty Mobile Zombies mode you can buy buffs to make you stronger against zombies especially when the zombies hordes become stronger.
There are 6 total buffs and you can equipped 3 buffs. You can buy buffs inside buff store with the points earn by killing zombies.
Rapid Reload
Buff: Reload speed +10%. Headshot damage +10% after fully reloaded.
Points required: 200.
Attack Weaknesses
Increases damage dealt by 10%.
Points required: 200.
Up and Up
Increase damage dealt by 6% for 3 seconds after killing an enemy. This effect and stack up to 3 times.
Points required: 200.
Staggers
When attacked, stagger all enemies within 3 meters for 0.5 seconds. This ability has a 45 second cooldown.
Points required: 200.
Escapist
When attacked, increase movement speed by 1% for 1 seconds. This effect has a 20 second cooldown.
Points required: 200.
Breakthrough
Increases player HP by 10%.
Points required: 200.
Conclusion
Having 3 buffs to stand a better chance against high zombie hordes. You can also upgrade the buffs to make it stronger when you have a lot of points.