Spiceclown

Plate Tectonics Break off 25 Hunter backplates.
100/100

Bad Gas Destroy 100 Grunt backpacks.
100/100

All Shield, No Yield Complete any level on Heroic difficulty or higher without taking health damage.

No Rush Find all skulls and terminals in The Maw.
100/100

Making a Necklace Collect 22 Skulls.
100/100

Disarmed Dismember 100 Flood parts.
100/100

Double Trouble Complete Two Betrayals.

Outpost Discoveries Find all skulls and terminals in Two Betrayals.
100/100

Protocol Dictates Action Complete The Library.

Timeless Tomes Find all skulls and terminals in The Library.
100/100

This Stuff is Your History Complete 343 Guilty Spark.

Proto Gravemind Find all skulls and terminals in 343 Guilty Spark.
100/100

Control Alt Delete Complete Assault on the Control Room.

Stowed in Snow Find all skulls and terminals in Assault on the Control Room.
100/100

That’s My Ride On Assault on the Control Room get to the Banshee before the Elite.

Make Them Count Kill 100 enemies with headshots.
100/100

Claims Adjuster Break off 50 Vehicle parts.
100/100

Bee Thirty Complete Silent Cartographer.

Buried Treasure Find all skulls and terminals in Silent Cartographer.
100/100

Infiltration Anticipation Complete Truth and Reconciliation.

Installation 04 Complete Halo.

The Autumn Leaves Complete Pillar of Autumn.

Clean Sweep Find all skulls and terminals in Pillar of Autumn.
100/100

Cranial Collect a Skull.

Friends Reunited Find all coffins and unlock the secret ending

All is Well Finish the main story

Destruction Derby Wreck 24 cars from the comfort of your own vehicle

Just Making Sure Get your revenge on the Sniper

A Proper Gander Find and tear down all posters
20/20

Hidden in rubble Find all secrets in the final three chapters
11/11

Beneath the Mask Find all masks
18/18

Critter Kill Hit Kill every critter
5/5

Friends Like These Accidentally shoot your friend

Prayer for the Dying Pay tribute at all hidden statues
5/5

Into the Abyss Find your way into the breach

Naval Blazing Clear 20 naval mines in one playthrough

Hidden among rats Find all secrets in the middle three chapters
17/17

Non-Cannonical Fire at the secondary target with the cannon

Secret Bunker Input the secret code

Happy Days Reunite with your friends

Shot Through the Heart Kill 10 Spider Kids while fighting the Mother

Lullabye Play the piano

Take a Load Off Rest your legs at 10 places around the world
10/10

Creature Comforts Comfort the scared pig

It's a Trap! Reach Sand City

Long Live The King Steal the crown from the leader of the Spider Kids

Scared to Dust Break all petrified kids in the clock tower

Hidden among the pines Find all secrets in the first three chapters
19/19

Tarred and Feathered Save your friend from the birds

Save Our Skins Escape Sniffer