Halo CE
Halo 2
Halo 3
Halo ODST
Halo Wars
Legends
100

This individual give Master Chief his AI companion

Captain Keyes

100

This is an iconic line spoken by Chief in the first mission

I need a weapon

100

This mission begins with Chief waking up in a small crater, being awoken by sergeant Johnson and his team.

Arrival

100
This character is seen giving Dutch a shotgun, and is eventually forced to carry a sniper rifle by his Commanding Officer

Romeo

100

This Sergeant drives a Gauss Hog and is a controllable unit in the game

Sergeant Forge

100

The password to the prototype machine to set off a self destruct sequence.

Be Human
200

This Crewman dies as soon as Master Chief is awoken from Cryo sleep

What is Sam

200

This game mechanic first debuted in Halo 2, and is even featured on the box art

Dual Wielding

200

This is the first skull of the game, being hidden somewhere away from the main path of the mission

Blind Skull

200

Dare is a new addition to the squad, and works for this organization

ONI

200

This phrase is spoken before Professor Anders touches the forerunner relic

Nothing Ventured Nothing Gained

300
There are X amount of missions that include the flood

5

300

This ship is in command of Captain Keyes' only daughter, and is taken over by the flood near the end of the campaign

In Amber Clad

300

This mission includes the first appearance of an ODST design that will be included in the spinoff game Halo 3: ODST

The Ark

300

This individual is controlled by the player and normally known as The Rookie, but many don't realize what his actual name is.

John Dougherty

300

This Covenant Leader, who is later killed, is the so called "Arbiter" of the Elites

Ripa Moramee

400

This Covenant leader was in charge of the fleet that chased after the Pillar of Autumn during the fall of Reach

Thel Vadam

400

This multiplayer map made a return from Halo CE, and is featured in numerous Machinimas

Blood Gulch

400
This elite controls an entire fleet against the brutes and assists humanity with the destruction of the covenant.

Rtas Vadum

400

This engineer assists Buck, Dare, and The Rookie during their escape from New Mombasa

Vergil
400

This studio is responsible for the development of Halo Wars, and was subsequently shut down shortly after it's release.

Ensemble Studios

500

This character canonically survives every halo game while fighting alongside chief, and makes his first appearance in Halo CE during the mission 343 Guilty Spark.

Chips Dubbo

500

This company manufactures the battle rifle

Misriah Armory

500

This skull was meant to be hidden away for years to come, and only revealed through a very meticulous pattern and understanding of musical notes. Until data miners discovered it only days after release.

IWHBYD

500
Halo ODST made this amount of money within two weeks of it's release

125 million dollars

500

This planet is the first planet that the Covenant invades, and is also where the first mission takes place.

Harvest

600

This character tracks down the Master Chief throughout the story, but is eventually cut down in an instant once he finally faces him.

Zuka Zamamee

600

This heretic leader is responsible for leading a rebellion against the covenant and abandoning the religion

Sesa Refumee

600

This AI tracks Chief's progress throughout his time on the Ark

Mendicant Bias

600

This character became a Spartan IV after retiring from service, he makes his first and last appearance in this game.

Dutch

600

This is the first game to receive this ESRB rating.

T for Teen

700

This ship was hijacked by Chief, Cortana, and 4 other UNSC personnel shortly after the destruction of the first Halo ring.

Ascendant Justice

700

The name of this monitor is infected by the flood and used as a puppet during the Gravemind's cut scene.

2401 Penitent Tangent