Halo 3 Walkthrough The Key - Rampant

September 12, 2016 (Last Updated: ) | Reading Time: 4 minutes

This Halo 3 walkthrough is divided into 24 total pages.

You can jump to nearby pages of the game using the links above.

The Key - Rampant

The small flood will attack you shortly after the mission begins. The path heads to the right.

Halo 3 Walkthrough - Halo 3 318
Halo 3 Walkthrough - Halo 3 318

When the hallway goes back to the left, the path splits and flood attack.

Halo 3 Walkthrough - Halo 3 319
Halo 3 Walkthrough - Halo 3 319

The right fork is a dead end with just some weapons. After the door the Gravemind pipes in.

Halo 3 Walkthrough - Halo 3 320
Halo 3 Walkthrough - Halo 3 320

Take either path around to a chute down.

Halo 3 Walkthrough - Halo 3 321
Halo 3 Walkthrough - Halo 3 321

Now Cortana speaks to you.

Halo 3 Walkthrough - Halo 3 322
Halo 3 Walkthrough - Halo 3 322

When Cortana is done speaking, the flood will attack. The path wraps around to the left, and up a ramp.

Halo 3 Walkthrough - Halo 3 323
Halo 3 Walkthrough - Halo 3 323

The door you want is on the right side. If you find the pelican you went the wrong way.

Halo 3 Walkthrough - Halo 3 324
Halo 3 Walkthrough - Halo 3 324

Gravemind will speak again after the door.

Halo 3 Walkthrough - Halo 3 325
Halo 3 Walkthrough - Halo 3 325

Go up the ramp and then back down the other side. When you see sunlight Gravemind speaks again.

Halo 3 Walkthrough - Halo 3 326
Halo 3 Walkthrough - Halo 3 326

Go through door at bottom of ramp and the forward and then to the right. More flood attack here.

Halo 3 Walkthrough - Halo 3 327
Halo 3 Walkthrough - Halo 3 327

Just run through them. If you kill the big ones the small ones just take them back over.

Halo 3 Walkthrough - Halo 3 328
Halo 3 Walkthrough - Halo 3 328

The path heads to the left here.

Halo 3 Walkthrough - Halo 3 329
Halo 3 Walkthrough - Halo 3 329

At the end of the hallway is a chute down.

Halo 3 Walkthrough - Halo 3 330
Halo 3 Walkthrough - Halo 3 330

Turn around, and then forward. Flood will attack in this room. Clear the room.

Halo 3 Walkthrough - Halo 3 331
Halo 3 Walkthrough - Halo 3 331

After the battle you will hear Cortana speak. Walk to the right side of the room.

Halo 3 Walkthrough - Halo 3 332
Halo 3 Walkthrough - Halo 3 332

Go through arch to a hallway. Walk to the left. At the top of ramp, to the right is the hallway you need.

Halo 3 Walkthrough - Halo 3 333
Halo 3 Walkthrough - Halo 3 333

Go up this ramp and then around to the right. There will be two fat flood that burst.

Halo 3 Walkthrough - Halo 3 334
Halo 3 Walkthrough - Halo 3 334

Go down this ramp and to the left. The path you want going up this ramp is to the right.

Halo 3 Walkthrough - Halo 3 335
Halo 3 Walkthrough - Halo 3 335

Keep following this path. Kill what gets in your way. When the path narrows, the Gravemind speaks to the Chief.

Halo 3 Walkthrough - Halo 3 336
Halo 3 Walkthrough - Halo 3 336

Keep going to a door. Go around to the right to find a ramp up.

Halo 3 Walkthrough - Halo 3 337
Halo 3 Walkthrough - Halo 3 337

At the top of this section of the ramp will be a hole to jump over.

Halo 3 Walkthrough - Halo 3 338
Halo 3 Walkthrough - Halo 3 338

Follow path and you will come to another hole to jump.

Halo 3 Walkthrough - Halo 3 339
Halo 3 Walkthrough - Halo 3 339

Follow the path around to the left. Just before the door is another hole to jump.

Halo 3 Walkthrough - Halo 3 340
Halo 3 Walkthrough - Halo 3 340

After the door you get a double whammy. First Cortana has a cut scene, then Gravemind gets his.

Halo 3 Walkthrough - Halo 3 341
Halo 3 Walkthrough - Halo 3 341

Follow the path down in to the water.

Halo 3 Walkthrough - Halo 3 342
Halo 3 Walkthrough - Halo 3 342

After the water the path goes to the right.

Halo 3 Walkthrough - Halo 3 343
Halo 3 Walkthrough - Halo 3 343

Go through the door. Go to the right along the walkway. Kill what gets in your way but try and just run past the flood.

Halo 3 Walkthrough - Halo 3 344
Halo 3 Walkthrough - Halo 3 344

Look for a bridge that goes to the center of room. It will be on your left side.

Halo 3 Walkthrough - Halo 3 345
Halo 3 Walkthrough - Halo 3 345

At the center, go to the right and there should be another bridge back across the room.

Halo 3 Walkthrough - Halo 3 346
Halo 3 Walkthrough - Halo 3 346

Go to the left a bit, looking for a door on the right.

Halo 3 Walkthrough - Halo 3 347
Halo 3 Walkthrough - Halo 3 347

When you go through door Cortana and Gravemind talk again.

Halo 3 Walkthrough - Halo 3 348
Halo 3 Walkthrough - Halo 3 348

Just follow the hallway down, going through doors on the way. Part way down Cortana will speak again.

Halo 3 Walkthrough - Halo 3 349
Halo 3 Walkthrough - Halo 3 349

At the bottom will be a glowing orb.

Halo 3 Walkthrough - Halo 3 350
Halo 3 Walkthrough - Halo 3 350

Go over to the orb and press the B button to break the orb. You must press it three times.

Halo 3 Walkthrough - Halo 3 351
Halo 3 Walkthrough - Halo 3 351

You are reunited with Cortana at last.

More Halo 3 Walkthroughs

This Halo 3 walkthrough is divided into 24 total pages.

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