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