Best Offence

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Best Offence is an achievement that requires the player to defeat the Kalphite King after his immortality has been triggered, and then defeating him again.

The Kalphite King will use Immortality when at low life points (below 35,000) and certain abilities are used on him depending on which phase he is in:


  1. Lower the boss to sub 35,000 life points
  2. Use the correct ability based on the phase
  3. Wait to see the message in your chatbox where the Kalphite King has triggered immortality
  4. Kill the boss as soon as possible before another spec occurs. It is suggested to use high-damage abilities. If you see the Kalphite King regenerate 30,000 life points, you have done it.
  5. Kill the boss again after it heals
  6. Note this information currently conflicts with the Kalphite King/Strategies page and requires evidence on which is most accurate

Update history[edit | edit source]

This information has been compiled as part of the update history project. Some updates may not be included—see here for how to help out!

Trivia[edit | edit source]

  • The achievement name is a reference to the saying "The best defence is a good offence", encouraging proactive attacks in order to hinder an enemy's ability to effectively launch their own offence.