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