Here is the full list of all 49 Top Gun: Hard Lock achievements worth 1,000 gamerscore.
Complete mission 01 - Welcome To The Gulf
Complete mission 04 - Alert Five
Complete mission 06 - High Value Targets
Complete mission 11 - Off Mission
Complete mission 14 - The Big One
Complete bonus mission - You Can Be Mine
Complete any Danger Zone mission
Make a successful landing on your first attempt in any mission
Defeat Maverick in mission 02 - Best Of The Best
Win the trophy in mission 12 - TOPGUN
Complete a Danger Close objective without damaging any allies
Complete all stealth sections in the game without being detected
Get silver or gold stars on 10 campaign missions
Get gold stars on all 15 campaign missions
Replay any campaign mission and improve your score
Complete any campaign mission without dying, after being below 25% health
Get your first air-to-air combat kill
Destroy 5 target drones
Destroy 5 aircraft
Destroy 25 aircraft
Destroy 100 aircraft
Destroy 25 aircraft using only guns
Destroy 25 aircraft using missiles
Destroy 25 aircraft in Hard Lock mode
Score 10 "Got Your Six" bonuses for destroying a target on your ally's tail
Score 10 "Got Your Frag" bonuses for destroying a target an ally has engaged
Score 10 "Close Quarters" bonuses for destroying aircraft within 1000m
Score 10 "Assist" bonuses for damaging an aircraft that an ally destroys
Successfully evade a missile
Destroy 25 armoured vehicles
Destroy 10 bunkers
Destroy a super-manoeuverable aircraft while flying an attack aircraft
Successfully evade 10 missiles in a row
Win 10 hard lock manoeuvres in a row
Destroy 5 bombers by destroying their engines with guns
Destroy an enemy aircraft with guns while barrel rolling
Destroy 5 enemies with a single shot
Buzz the tower in any mission
Buzz the tower in five different missions
Spend more than 5 minutes flying within 200m of the ground
Spend more than 5 minutes flying with afterburner activated
Perform 100 barrel rolls
Fly a total of 20,000km
Fire every weapon in the game at least once
Fly every aircraft in the game at least once
Reach Fleet Admiral rank
Win a co-op mission with at least one other player
Get a Kill Streak of 5 in a Deathmatch or Team Deathmatch game
Score 10 "Payback" bonuses for destroying the last player who killed you