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