Full list of all 45 Diablo III achievements worth 1,000 gamerscore. It takes around 60-80 hours to unlock all of the achievements on Xbox 360.
Kill Maghda in Normal mode.
Kill Maghda in Inferno mode.
Complete all the Butcher triumph challenges.
Recruit the Templar, Scoundrel, and Enchantress.
Pick up 500,000 gold.
Pick up 5,000,000 gold.
Buy all stash upgrades.
Equip all Inventory slots with items that have a minimum required level of 60 or higher.
Buy each type of item from merchants.
Complete all the Belial triumph challenges.
Reach level 30 in Hardcore mode.
Complete all the main character, follower, and artisan conversation challenges.
Complete all the Diablo triumph challenges.
Kill 100 Treasure Goblins.
Kill Diablo in Inferno mode.
Kill Azmodan in Inferno mode.
Complete all the Azmodan triumph challenges.
Kill Belial in Inferno mode.
Kill the Butcher in Inferno mode.
Raise the Jeweler to level 10.
Kill the Skeleton King in Inferno mode.
Reach level 60.
Raise the Blacksmith to level 10.
Kill Diablo in Hell mode.
Kill Diablo in Nightmare mode.
Equip all Inventory slots with items that have a minimum required level of 25 or higher.
Complete all quests in Act IV.
Kill Diablo in Normal mode.
Complete all quests in Act III.
Kill Azmodan in Normal mode.
Reach level 30.
Kill 500 elite (champion, rare, or unique) enemies.
Complete all quests in Act II.
Combine gems.
Kill Belial in Normal mode.
Fully equip one of your followers.
Complete all quests in Act I.
Kill the Butcher in Normal mode.
Kill one of the unique enemies listed in the Never Seen That Before Challenge.
Equip a legendary (orange) item.
Use a merchant to repair an item.
Craft 5 items.
Kill the Skeleton King in Normal mode.
Reach level 10.
Equip a rare (yellow) item.