More specifically, Kassie's skill also automatically activates if an teammate's health drops below 50HP, making it difficult for them to be defeated with just a few shots. Currently this character only appears in the OB45 Free Fire Advance Server version, if you can download the APK file and install, try playing Kassie before adding it in the new version.
==> Direct download link for Free Fire Advance Server OB45 APK here.
In addition, you also need an activation code to log into the game. The activation code is a type of identity verification code that Garena provides when players register to join the test server. Each Free Fire OB45 activation code can only be used once, so we constantly update new codes on the Taimienphi website, readers can access to get it for FREE.