Here is the full list of all 58 Paladins achievements. It takes around 200 hours to unlock all of the achievements on Windows.
Play 25 hours with a player from your friends list in your party.
Play 100 matches while in a party.
Play 10 hours with a player from your friends list in your party.
Have a Paladins account over 1 year old
Play 50 matches while in a party.
Play 5 hours with a player from your friends list in your party.
Earn over 500,000 Gold over your play history
Get a daily reward 7 days in a row
Survive more than 50 battles with less than 10% health.
Play over 300 matches
400 Double Kills.
10 Champions at Mastery 5.
Heal over 100,000 health in a match
9 Champions at Mastery 5.
8 Champions at Mastery 5.
7 Champions at Mastery 5.
6 Champions at Mastery 5.
5 Champions at Mastery 5.
4 Champions at Mastery 5.
200 Double Kills.
Play 20 matches while in a party.
Play 10 matches while in a party.
3 Champions at Mastery 5.
Kill an enemy champion after they had already killed you.
Unlock Ranked
100 Double Kills
Shield over 200,000 damage in a match
Kill an enemy player who is on a 15 killstreak or higher.
Build your own custom loadout
2 Champions at Mastery 5.
Spend over 100,000 Credits in the item store over all your matches
50 Double Kills.
1 Champion at Mastery 5.
Play a match while in a party.
Deal damage to every enemy champion in a match before any of them damage you.
Die to an environmental hazard.
Get a killing blow after the round has ended.
Kill an enemy player from over 300 units away.
Kill more than 20 enemy champions in a single match.
10 Double Kills.
Reach a 20 kill streak in a match
Kill a player with an environmental hazard.
Land 5 headshots in a row without missing.
Deal more than 100,000 damage during a match.
Win a match where the enemy team scored no points.
Kill an enemy player while you are at or below 50 Health.
Kill a player in the air who is over 100 units above the ground.
Complete the Paladins Tutorial.
Play 100 hours with a player from your friends list in your party.
Play 250 hours with a player from your friends list in your party.
Reach level 30 during the Paladins Beta.
Be the only player alive in a match.
Unlock 100 Cards.
Earn over 1,000,000 Gold over your play history
Reach Master in Ranked
Have over 30 different champions at mastery level 10 or higher
Have over 30 different champions at mastery level 15 or higher
Have over 30 different champions at mastery level 20 or higher