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