Here is the full list of all 30 Just Act Natural achievements.
Assassinate 3 players in one round of Assassins
In one round, kill all the Hider players as the Seeker. (In a match of at least 3 players)
Collect 6 diamonds in one round of Diamond Grab(In a game of at least 3 players)
Be the first to reach the finish line in a round of Death Race
Don't die once in a match of at least 3 rounds
Log on to Just Act Natural during our December Christmas event!
Win 3 games in a row in a lobby with at least 3 players
Play 10 matches of Just Act Natural
Play 50 matches of Just Act Natural
Play 150 matches of Just Act Natural
Get frozen 3 times in one match of Death Run
Kill all Hider players in less than 30 seconds as the Seeker. (In a game with 4 or more players)
Kill 20 NPCs in one match
Kill 7 players in one game of Assassins
Get first place in a match with a negative score value
Switch outfits 10 times in one match
Kill 3 players in one match while in Assassin Vision
Get less than -50 points in a match
Get 15 kills as the Seeker
Get 50 Kills as the Seeker
Get 100 Kills as the Seeker
Walk ten miles in total as a Hider
Win 10 matches of Just Act Natural
Win 25 matches of Just Act Natural
Collect all four fruit in a game of SCAVENGERS
Win a game of SCAVENGERS by being the last one standing
Earn a total of 150 points in the CLOUT CHASERS game mode
Join a Lobby with a player with this achievement
Survive until the end of the round as bread in a 'Goose on the Loose' match with at least 5 players
Steal from the Museum