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