Character Upgrade System is an upgrading system for characters in CrossFire.
Like the name suggested, this system can upgrade some certain in-game characters (various between versions) that players can upgrade characters by customizing favored skills based on players' needs. Characters can be upgraded up to two, three, or four skills with various options provided.
Besides the common skills which can be found in characters obtainable from AI Ticket, this system now features permanent items and more skills specialized in certain modes. These skills are categorized as Normal Skills (colored blue) and Special Skills (colored gold). Both can be randomly swapped by using Character Option Change Card (obtainable from Item Shop, Mileage Shop or from Reward Crates in Zombie Mode) or can be extracted by using Character Option Extraction Card thus said skills will be saved in the extraction tab storage for later use.
Players can use one Character Option Change Card to see other new skills, and decide whether to keep the old one or use the new one (similar to Accessory System). Players can use 10 cards at once to see the list of 11 skills (10 from the cards, and 1 from additional bonus skills) provided and decide which skill to choose.
Available in all CrossFire versions
These are the skills that players can pick based on players' playstyle. Notice that old characters which are firstly released (depending on servers) don't feature new skills, such as Reload-Skipped Skill or Reduced Cooling Time in Mutation Mode; furthermore, some skills are exclusively available for specific characters.
|Auto-reload rifles. Activated when switching to another weapon in the bag.|
|Auto-reload sniper rifles. Activated when switching to another weapon in the bag.|
|Auto-reload secondary weapons. Activated when switching to another weapon in the bag.|
|Immunity to self/teammates' grenades.|
|Reduced fall damage.|
|Reduced blinding time from Flashbang.|
|Reduced smoke effect from Smoke Grenade.|
|Gauge fill upon killing zombies is increased in Challenge Mode.|
|Additional Mutation Vest.|
|Emotion (Press N)|
|Increased health point in Mass Mutation Mode.|
|Increased movement speed in Mutation Mode.|
|Increased movement speed in Mass Mutation Mode.|
|Additional ammo magazine in Mutation Mode through Supply Box.|
|Additional 500 AC point in Mutation Mode.|
|Create penetrating damage through mutants' armors right after reloading.|
|Press F to automatically reload weapons as the reloading animation is skipped for 10s. Available in Mutation Mode and Mass Mutation Mode.|
|Reduced mutant's skill cooling time (in Mutation Mode and Mass Mutation Mode).|
|-||Emotion (press N).|
- The Emotion skill is the default for some characters like ULP-Renewal, and it can't be swapped to other skills, however.
- In CF China, the and skill were initially for all upgradeable characters, even older ones like FOX-Seaside. Later then, Tencent stated that the two skills are limited to newer upgradeable characters (starting from STAR-Renewal, Girl Crush-Noble Gold and Sabel-X), and the incident which older characters can also see the two skills and successfully apply is a visual bug. They also stated any players that has applied the two skills in older characters will be compensated instead.