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