Here is the full list of all 51 Vietnam ‘65 achievements.
Achieve 5 consecutive kills of VC units using US infantry.
Achieve 3 consecutive kills with infantry.
Achieve 4 consecutive successful air strikes with a Cobra.
Improve H&M score for 6 turns in a row.
Accumulate rank points
Win a game after allowing H&M to drop below 40 (Veteran)
Lose a game after having an H&M higher than 60
Achieve 2 consecutive decisive victories.
Kill over 100 enemies in a game.
Kill over 50 enemies from a single enemy faction.
Achieve 6 consecutive successful air strikes.
Lose more than two transport helicopters in one game.
Win 10 Veteran games
Win a game
Achieve 5 kills with ARVN infantry in one game.
Achieve 5 victories
Maximise the H&M of two villages.
Win 3 games.
Kill 25 NVA.
Kill 75 NVA.
Kill 150 NVA.
Kill 300 NVA.
End the game with at least 4 active Hueys, 1 Chinook and 1 Cobra (Veteran)
Acquire all Marksman badges,
Acquire all Sharpshooter badges.
Acquire all Expert badges.
Clear 30 mines.
Heal 50 US infantry units at the HQ.
Achieve 10 consecutive kills.
Achieve 5 consecutive kills of NVA units using US infantry.
Achieve 3 consecutive kills using ARVN infantry.
Play 3 games.
Play 8 games.
Play 13 games.
Play 18 games.
Play 23 games.
Play 28 games.
Achieve a decisive victory. (Veteran)
Achieve 5 kills in one game using Green Berets.
End a game with 6 or more active ARVN units.
End a game with at least 6 active infantry, 2 mechanized infantry, 2 artillery, 1 armor and 1 cobra unit.
Finish a game with at least 3 active forward bases.