User:Impurest Cheese/Mystery Achievement

The Mystery Achievement is awarded for doing seven tasks on Halo: Hostilities with Legendary difficulty activated. The achievement is worth 70G points and unlocks the Arbiter Armor.

Parts of the Mystery Achievement

 * Part 1 - Unlock all Endings on Legendary


 * Part 2 - Unlock the Spartan Skin and complete the game on Legendary


 * Part 3 - Ride out seven waves called in by a Holo Ops Grunt on Legendary with the Iodine and IWHBYD Skulls activated


 * Part 4 - Drive a Bactrian Transport Truck from one end of the highway to the other on Legendary


 * Part 5 - Complete the Task Mass Driving Instructor without killing the Covenant Fleet


 * Part 6 - Find Ten Items from previous halo games in Task 11 - Final Act


 * Part 7 - Find and Defeat Lara Croft

Trivia

 * The symbol on the achievement is an Introbang used to show surpriserise and questioning at the same time.