Here is the full list of all 28 Wild Warfare achievements.
Defeat 50 enemies
Take down a player who has your team's flag
Pilot the Raptor
Take down someone while they are airbourne
Defeat 10 enemies
Hold the Snail for 100 seconds in a row
Capture the enemy flag 10 times
Get an 8 player killstreak
Get a 6 player killstreak
Get a 4 player killstreak
Demonstrate you know where the mouse 1 button is
Demonstrate you really know where the mouse 1 button is
Take down a developer
Take down someone who has taken down a developer
Get a 10 player killstreak
Get a 20 player killstreak
Hold the Snail for 1 hour in total
Capture the enemy flag 100 times
Return your flag to the base 100 times
Capture the enemy flag as a Heavy
Return your flag to the base 10 times
Defeat 100 enemies
Defeat 200 enemies
Get defeated 25 times
Capture the enemy flag 50 times
Get 10 killstreaks in a match
Return your flag to the base 50 times
Get 20 killstreaks in a match