Deadlocking

Why Can't I Hold All This Ammo? Upgrade all options in the Stock menu.

Melonpopper - 15 headshots using the sniper rifle Get 15 headshots using the VC32 Sniper Rifle

They Never Even Stood A Chance Completely upgraded all weapons.

Weapons expert Complete the weapon mastery for any weapon.

A Real Challenger Complete 20 Challenges

Hacker Time Hack. Tick. Tock. Run. Repeat.

Fragmartyr - Kill 2 Helghast whilst taking your own life Kill 2 Helghast at once and take your own life using a single frag grenade

Dancing Queen Do 25 capespins in a row, without moving, while on the ship bridge.

Breaking and Entering Find a way into the secret base

I am Deadpool Complete "Front Gates of EEEEEEEVIL!" from start to finish using only swords and pistols

Top place taken Win a Boss Race.

Armed for Bear Cold Darkness Challenge: Pick up 6 different weapons

Smash 15 Island billboards Awarded when you smash through your 15th pristine Island billboard

Give a Man a Fire Cold Darkness Challenge: Kill 20 enemies with Dragonfire Shotgun Rounds

No time for losers Defeat the Champion

Blood is thicker than everything Defeat Kruger

Equal in the Face of Death Defeat Grandmaster Meio

Eye Scream, You Scream Pop 20 Grunt eyeballs.
19/20

I refuse to sink Complete all side missions in Anchor

Insignia Obtain all XOF unit patches

Throwdown! Perform 8 throws and win in a multiplayer match

Blow Up the Playing Field Use a secret explosive weapon to kill 10 enemies. (Agony Bolt effects negate results)

One Better Increase the level of a Certified Item

Minigunned - Destroy all targets Destroyed everything while using the Minigun on the Intruder

Well Done Endurance Challenge: Eat the meat of 5 birds, squirrels or rabbits that were killed with fire

Now I am the Master Defeat Meio Prime

Goon De-leet Kill 1337 Goons

Platinum Trophy Get all Trophies.

Prolific gunsmith Upgrade 20 weapon intermarks in total.

Shields up Complete a Gold- or Silver-tier Challenge while countering at least 25 times

Are You Packin'? Obtain the Jetpack.

Jack of all Guns Kill an enemy with every firearm type.

I. AM. INVINCIBLE! Use the Gameplay Tweaker to become invincible... And prove it!

1CC Complete Arcade mode without losing all lives, on Experienced difficulty

Chasing Catherine Discovered Lambda

Firepower Kill 5 guards at once with a blunderbuss.

Now you see me, now you don't Disable an alarm using a security terminal while the alarm is active

Squad Goals Finish 3 missions in Coop.

DLC: Mars: Martian Journal Collect all of Larry's notes (Host Only).

Anything() Deal at least 1024 damage in one Turn() in the Practice Test.

Morituri te salutant Survive 30 consecutive waves with at least one co-op player.

Opportunist Perform 50 takedowns within the same playthrough. (Civilians don't count.)

Full speed Use the Boost for a total of 10 minutes.

Keep the Good Times Rolling Chain a 20-defeated combo in Slayers.

Cole'd Blooded Combo an entire wave on any Gold-tier Challenge map

Just starting Upgrade the Rarity of one Common vehicle.

The Past that Defines Thee Defeat any Colossi While in Reminiscence Mode

Ticks & Leeches Beat the Parasiter

Method Actor Enter Director Mode using any of your own GTA Online characters.

Non-Regulation Red Dead Online: Craft 25 pieces of ammunition.