Here is the full list of all 16 Never Not Shooting achievements.
Completed a round, which ended with death...
Customized your ship from the default weapons or color.
Played a game that lasted longer than 3 minutes.
Survived for 30 seconds... in a row.
Survived for 90 seconds... in a row.
Survived for 180 seconds... in a row.
Played a game that lasted longer than 6 minutes.
Played a game that lasted longer than 9 minutes.
Scored over 50,000. Not bad for an amateur.
Scored over 125,000 all on you're own. Then you died.
Scored over 250,000. Just you. No one else.
Your team scored over 250,000. I mean the bad guys still won but good job.
Your team scored a million points! Too bad it had to end.
You didn't really but 2,500,000 is something to be proud of.
You played the game like it was intended. Now you can share the blame of your eventual defeat.
You fought the good fight against inevitability... but, you know, inevitability.