Full list of all 49 Star Trek achievements worth 1,000 gamerscore. It takes around 20-25 hours to unlock all of the achievements on Xbox 360.
Killed or took down an enemy that your teammate (AI or co-op player) has stunned
Completed the Helios-1 chapter on any difficulty
Complete the New Vulcan chapter on any difficulty
Complete the Space Battle chapter on any difficulty
Complete the Frontier Starbase chapter on any difficulty
Complete the Volatile Cargo & Flashback chapters on any difficulty
Complete the Gorn Planet & The Trials chapters on any difficulty
Complete the Enterprise Capture chapter on any difficulty
Complete the Mothership chapter on any difficulty
Complete the game on any difficulty setting
Complete the game on hard difficulty setting
Kill 100 enemies with the Captain's Phaser
Kill 100 enemies with the Vulcan Repeater
Kill 50 enemies with the Starfleet Phaser Rifle
Kill 50 enemies with the Vulcan Pulse Cannon
Kill 20 enemies with the Starfleet Type III Rifle
Kill 50 enemies with the Ravager
Kill 50 enemies with the Marauder
Kill 50 enemies with the Pillager
Kill 50 enemies with the Railer
Kill 20 enemies with the Striker
Kill 50 enemies with the Arc Driver
Kill 20 enemies with Plasma Grenades
Connect every weapon's alternate fire with enemies
Find half of all audio logs
Find all audio logs
Find half of all research items
Find all research items
Complete one chapter in co-operative play
Complete four chapters in co-operative play
Complete all chapters in co-operative play
Buy all upgrades for the Captain's Phaser
Buy all upgrades for the Vulcan Repeater
Buy all upgrades for the Tricorder
Clear 30 mini-games including co-operative hacks, bypasses, and power reroutes
Take down 30 enemies in a non-lethal manner
Perform Mind Meld on 10 different enemies
Revive your teammate (AI or co-op player) 20 times
Complete the Space Battle with a hull integrity of 85% or more
Win the brawl against your buddy in "The Trials" chapter
After the brawl, escape in less than 6 minutes in "The Trials" chapter
Complete all Optional Objectives
Hack an enemy drone to your side and have it kill another enemy
Order your teammate (AI or co-op player) and have him complete 5 bypasses in a row
Kill 3 enemies while your teammate (AI or co-op player) is in a downed state
Kill 3 enemies while in a single downed state
As Kirk, get a Gorn enemy to melee you
As Spock, bleed out during a downed state, leaving Kirk alone and failing the mission
Complete half of all Optional Objectives