Here is the full list of all 17 Never Stop Sneakin' achievements.
You successfully completed the agency training program.
You established a strategic foothold on Amadeus Island.
Your base is coming along, and you've hired some smart people.
Your base is getting bigger! With this elevator, you can get a ping pong table down there.
Your base is expanding nicely, and that high-tech camouflage facility will make Guildenstern jealous for sure.
Your base is not only expanding, but you're taking safety into account. That's worth an achievement.
You're nearly ready to take your sneakin' antics into outer space! You've come a long way from that teeny tent!
Not even time itself is safe from the Department of Sneakin'!
You activated the time machine, stopped Guildenstern, and saved all the presidents!
You completed your first official mission for the Department of Sneakin'!
You recruited a new agent to help foil Guildenstern's evil plan!
You recruited a brand new generation of spies and sneakin' agents to take the fight to the evil Executive Branch!
You unlocked a new weapon skin for your pistol and sneakblade.
You found every single weapon skin in every eventuality within Amadeus Island. That's a lot of guns.
You unlocked your very first perk.
You unlocked every single perk Amadeus had hidden away in his base.
Hacked into your first strongbox and pilfered the contents within.