Full list of all 38 Magic 2014 - Duels of the Planeswalkers achievements worth 500 gamerscore.
The base game contains 30 achievements worth 400 Gamerscore, and there is 1 DLC pack containing 8 achievements worth 100 Gamerscore.
Won a Multiplayer game
Dealt a total of 5000 damage
Destroyed or dealt lethal damage to 300 creatures
Won 75 games
Won a Two-Headed Giant game
Countered 25 spells
Won a game while dealing no combat damage to a player
Defeated Ramaz
Completed the Sealed campaign
Won a Sealed game
Unlocked 50 cards
Won a game with each deck
Defeated the "Masks of the Dimir" deck in campaign mode
Unlocked every deck
Defeated the "Enter the Dracomancer" deck in campaign mode
Controlled seven or more Slivers with different names
Won 25 games
Defeated the "Sliver Hive" deck in campaign mode
Had 40 permanents on the battlefield
Controlled seventeen land of a single type
Controlled a permanent with ten or more counters on it
Lost the “Angry Mob” encounter
Won a game without losing any life
Defeated the "Chant of Mul Daya" deck in campaign mode
Won a game without destroying or dealing lethal damage to a creature
Defeated the "Avacyn’s Glory" deck in campaign mode
Solved every Challenge
Dealt over 200 damage in the "Go Berserk" Challenge
Solved a Challenge
Fully unlocked one deck
Won a game with each expansion deck
Defeated the "Lords of Darkness" deck in campaign mode
Defeated the "Sword of the Samurai" deck in campaign mode
Won a game at 1 life
Dealt 10 damage to a player with a single spell or ability
Solved all expansion Challenges
Controlled a permanent with two or more Equipment attached to it
Controlled an attacking creature with power 10 or greater