100% Completion

100% Completion refers to having mastered all aspects of a title. The Permanently Missable Items Article is useful to those undertaking this challenge. Like the Three Heart Challenge, and Speed Runs 100% Completions are an optional challenge for The Legend of Zelda series fans.

To brag of having a 100% Completed file, one must have all Heart Containers, Weapon upgrades, Items, and Collectible items such as Ship Parts. Unlike the Metroid Series, the Legend of Zelda series thus far has no in-game rewards such as alternative or lengthened endings for the feat. Although finding every last collectible is difficult in its own rights, doing so makes gameplay easier than Speedruns, Minimal Completions, and Three Hearts Challenges.

The Legend of Zelda (Game)
Most Difficult Aspect- Beating the game Checklist
 * 16 Heart Containers
 * Bomb Capacity Upgrades
 * Boomerang upgraded
 * White Sword obtained
 * Arrows upgraded to Silver Arrows
 * Blue and Red Rings obtained
 * Shield upgraded to Larger Shield
 * All Dungeon Items Obtained
 * Complete both Quests

The Adventure of Link
Most Difficult Aspect- Beating the game Checklist
 * All heart containers
 * All magic upgrades
 * Level 9 life
 * Level 9 magic
 * Level 9 attack
 * All 1-up dolls
 * All spells
 * Upward and downward stab attacks

A Link to the Past
Most Difficult Aspect- Beating the game Checklist
 * All Pieces of Heart found
 * All four bottles obtained
 * All items obtained
 * Red boomerang obtained
 * Master Sword tempered to level 3
 * Red Mail obtained

Gameboy Advance remake (The Gameboy Advance remake included several new features, extending the checklist.)
 * Four Swords completed
 * Palace of the Four Sword completed
 * Lumberjack sidequest completed

Link's Awakening
Most Difficult Aspect- This is a matter of personal opinion. Checklist
 * All pieces of heart found
 * All items obtained