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