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