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