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.
Play 100 hours with a player from your friends list in your party.
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
Have a Paladins account over 1 year old
400 Double Kills.
Earn over 1,000,000 Gold over your play history
Play 25 hours with a player from your friends list in your party.
Get a daily reward 7 days in a row
Kill an enemy player from over 300 units away.
Be the only player alive in a match.
10 Champions at Mastery 5.
9 Champions at Mastery 5.
8 Champions at Mastery 5.
7 Champions at Mastery 5.
Play 100 matches while in a party.
6 Champions at Mastery 5.
200 Double Kills.
5 Champions at Mastery 5.
4 Champions at Mastery 5.
3 Champions at Mastery 5.
2 Champions at Mastery 5.
1 Champion at Mastery 5.
Play 10 hours with a player from your friends list in your party.
Play 50 matches while in a party.
Play over 300 matches
Earn over 500,000 Gold over your play history
Reach level 30 during the Paladins Beta.
100 Double Kills
Play 5 hours with a player from your friends list in your party.
Heal over 100,000 health in a match
Survive more than 50 battles with less than 10% health.
Kill a player with an environmental hazard.
Play 20 matches while in a party.
Deal damage to every enemy champion in a match before any of them damage you.
Unlock Ranked
Play 10 matches while in a party.
50 Double Kills.
Complete the Paladins Tutorial.
Die to an environmental hazard.
Spend over 100,000 Credits in the item store over all your matches
Kill an enemy player who is on a 15 killstreak or higher.
Kill an enemy champion after they had already killed you.
Kill an enemy player while you are at or below 50 Health.
Unlock 100 Cards.
Shield over 200,000 damage in a match
10 Double Kills.
Get a killing blow after the round has ended.
Deal more than 100,000 damage during a match.
Kill more than 20 enemy champions in a single match.
Land 5 headshots in a row without missing.
Play a match while in a party.
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.
Build your own custom loadout