343 Guilty Spark is the sixth campaign level in Halo: Combat Evolved. This atmospheric horror level introduces the Flood and contains some unique glitches.

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Stay in Pelican

Ride the Pelican dropship instead of immediately exiting, allowing you to experience a unique perspective of the level.

How to Perform

1. The level begins with you in a Pelican
2. As soon as you gain control, immediately throw a grenade
3. The grenade explosion keeps you inside the Pelican
4. Ride the Pelican until it reaches its final destination
5. Exit using the vehicle exit button when the Pelican stops

What You Experience

• See the level from an aerial view
• Watch the Pelican's flight path
• Exit at a different location than intended

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The Lone Marine

Discover a hidden, isolated Marine in an unexpected location.

How to Perform

1. As soon as you gain control at the start, run to the opposite side of the Pelican
2. Look for a nearby rock formation
3. Jump onto the rock
4. As the Pelican begins to fly away, jump onto it
5. Ride the Pelican to a higher ledge
6. Jump off onto the ledge
7. Head left along the ledge
8. You'll find a single Marine standing alone, without weapons

The Marine

This Marine appears to be a leftover from development—he has no weapons, no dialogue, and simply stands in this hidden location. Finding him is a classic Halo CE easter egg hunt.

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Flood Bump Technique

While more commonly used on "Keyes," the Flood Bump technique originates from levels featuring the Flood.

How It Works

1. Find a "Reviver" Flood Combat Form (a corpse that will reanimate)
2. Stand on top of it
3. When the Flood form revives, the physics engine pushes you away
4. This can teleport you through walls or doors

On This Level

• Can be used to clip through certain doors
• Timing is critical—only ~40% of Combat Forms are Revivers
• Practice identifying which corpses will reanimate

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Swamp Navigation Shortcuts

The swamp area has several shortcuts for speedruns.

Direct Path

• Instead of following the intended winding path, look for direct routes
• Some rocks and terrain can be used to skip sections
• Grenade jumps can reach higher ground

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Tips

• The Pelican ride is fun but not useful for speedruns
• Finding the Lone Marine is a classic exploration challenge
• The Flood Bump technique is valuable for later levels
• This level is relatively linear with fewer major skips

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See Also

• General Techniques — Fundamental tricks
• Assault on the Control Room — Previous level
• The Library — Next level
• Keyes — Where Flood Bump is most useful