The C4 Stratagem is one of the newest additions introduced through the Redacted Regiment Warbond in Helldivers 2. While some players initially dismissed it as underwhelming, C4 is far more powerful—and versatile—than it first appears. When used correctly, it offers excellent crowd control, strong single-target damage, and unique tactical flexibility that few other stratagems can match.

This guide provides a full breakdown of how C4 works, what enemies it excels against, advanced tips, and suggested improvements, so you can decide whether it deserves a spot in your loadout.

What Makes C4 Unique in Helldivers 2?

C4 combines two key strengths:

- Large explosive radius similar to Dynamite
- High direct damage comparable to Thermite

This hybrid design allows C4 to clear hordes effectively while still deleting heavy enemies with precise placement. Unlike expendable explosives, C4 is also a non-expendable support weapon, meaning it remains useful throughout long missions—especially those involving one-handed objectives.

Essential C4 Usage Tip (Very Important)

If you deploy all your C4 and find yourself unable to throw more after resupplying, reload your detonator. This fixes a common issue where players think their C4 is bugged when it’s actually tied to the detonator state.

C4 Damage Performance Against Enemies

Heavy Enemies

- Chargers: One C4 to the face or back instantly kills them. You can also place it on the ground and detonate as they charge over it.
- Hulks: Can be killed with a single C4, especially when grouped.
- War Striders: One-shot if you hit the leg or lower body—avoid the torso.
- Harvesters: Aim for the joint. Be aware that C4 may bounce off shielded versions.
- Impalers: One C4 to the front leg is enough.
- Bile Titans: Two C4s to the face, best thrown while they are spewing.
- Leviathans: Require increased throwing distance (Servo-Assisted armor recommended). Expect to use 5–6 C4.

Air Units

- Gunships: Difficult to hit without Servo-Assisted armor.
- Stingrays: Throw C4 upward and detonate when they fly overhead.

Automaton Targets

- Tanks: Place C4 on the rear turret or base for guaranteed kills.
- Factory Striders: Two C4 placed on weak points can destroy them extremely fast.

Hive Lords and Armor Mechanics

C4 can damage Hive Lords, but it’s not ideal for finishing them off. The best approach is to break armor pieces first using a combination of explosives. Once armor is broken, avoid continuing explosive damage on the same spot, as Hive Lords appear to have near-total explosive resistance afterward. Instead, target additional armor sections.

Objectives and Structures

C4 excels at objectives:

- Fabricators / Bug Nests: One C4 destroys most (except Bile Titan nests)
- Drop Ships: Can be eliminated instantly
- Bunkers: Require 5 C4
- Shaky Hotel & Spore Spewers: Two C4

One of the most satisfying uses is placing C4 on multiple objectives and detonating them all at once, instantly completing large portions of the mission.

C4 cannot destroy Detector Towers or Stratagem Jammers, which helps preserve mission balance.

Advanced Tips and Tricks

- You can shoot C4 to detonate it, though it’s situational.
- C4 is tied to its specific detonator—calling in multiple packs allows creative trap setups.
- On Raise the Flag missions, C4 enables stealthy objective control.
- There is currently a host-side detection bug, making enemies more aware of C4 when the host uses it.

Suggested Improvements for C4

While fun and powerful, C4 could be improved with:

- Consistent control placement across weapons
- Better resupply scaling (more C4 per ammo box)
- Full backpack refill when resupplied by teammates
- Potential alternative detonation mechanics without a dedicated detonator

These changes would make C4 less ammo-hungry and more team-friendly.

Best Loadout Pairings

For Automaton missions:

- C4
- Commando
- Rocket Sentry
- Flexible final stratagem slot

Recommended gear includes Thermites, grenade-boosting armor, and primaries like the Diligence, Purifier, or Crossbow for maximum explosive synergy.

Final Verdict: Is C4 Worth Using?

Absolutely. C4 ranks S-Tier for fun, creativity, and tactical flexibility. While it isn’t perfect—and performs worse against bug factions—it enables entirely new playstyles and offers unmatched satisfaction when used well.