Halokon

In the Blink of an Eye Defeat Super Tyrant with 5+ minutes left until detonation.

Three of a Kind Kill 3 enemies in a row with your knife in the single player campaign.

Clear Signals Unlock every ctOS Tower

Frequent Flyer Landed 10 gravity kicks without landing or taking damage.

Gods of the North Defeat Hrungnir of the Frost

Charted! - Hard Finish the Game on Hard Without Changing the Difficulty

It is the King, or his ghost! Defeat the King Beneath

Ghost in the Machine Download a new ally into a robotic body.

The Devil in Iron Defeat the Kinscourge

Railing at the Wind Travel through Catacomb Subrails

Vengeance Complete Act 4

Throwback Master Throw Back a Grenade and Defeat 2 Enemies at Once

Year 2 Spend two years in the Eighth Underworld.

Discovered Krom's Canyon Discovered Krom's Canyon

Kitted Out In the Main Campaign, fully upgraded one weapon and one Vigor.

Big Game Hunter In the Main Campaign, killed 100 enemies with the Founder Huntsman Carbine or Vox Burstgun.

Grand Largesse In the Main Campaign, spent $10,000 at the vending machines of Columbia.

Ex-plorer Explore Eco Mine

Boom Bada Boom Destroy Incoming Blast Bots

Bombs on a Train Escort Bomb Train

Needle in a Haystack Kill five enemies from within the same haystack.

Expert Fortune Hunter Find 80 Treasures

Survivor Kill 75 Enemies in a Row Without Dying

Ghost In The Machine Hack 15 computers in Abstergo Entertainment.

Passionately Reciprocated In the Main Campaign, killed 150 enemies with the Founder Triple R Machine Gun or Vox Repeater.

Bossing the Bot Boss Defeat Veger's Precursor Robot

Wolves Beyond the Border Reach the highlands

Conservationist 1 Complete Crush's Dungeon without hitting any fodder

Loose Cannon In the Main Campaign, killed 25 enemies with the Paddywhacker Hand Cannon.

Swamp Gas Reach Port via Sewer

Log Off Complete Act 5

Evil Intentions Bad guys can't say goodbye.

Poof! Use 3 smoke grenades.

Fully Researched Rosie Fully research the Rosie

*sniff* *sniff* Make the angelitos cry.

"I wasn't always this color!" Talk to Chepito about how long he's been down here.

Business and Pleasure Earn a total of 50,000 livres.

Evil Exposure Bad guys love to be seen.

Facemelter Killed 25 enemies with corrosive weapons

Mental Athlete Solve 70% of Riddler challenges

Won Ikrie's Challenge Met Ikrie again at the Snowchants Hunting Ground and took first place in her challenge.

"Okay, how much of this haven't you figured out, Calavera?" Get Domino to explain the racket to you.

"IT'S A BUST-ALL!" Talk to Chepito about his bartering tactics.

Fellowship Unpacked 2007.

Artsy Craftsy Craft 5 upgrades for your equipment.

"Save your breath..." Try to explain to Meche.

Road Trip Complete a Supply Drop quest.

Can Can Cannon Destroy Sniper Cannons

Childhood's Beginning You became an infant Great One,
lifting humanity into its next childhood.

King Of The Castle Capture all forts.