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Covert Lethality
Warframe · Mod

Covert Lethality

Melee finisher and initial combo mod

Released Jul 31, 2015

Covert Lethality increases finisher damage and initial combo on a melee weapon. Consider it when finishers are a meaningful part of the weapon's use or the extra initial combo supports the intended setup.

TypeMeleePolaritymaduraiMax rank3Base drain10VariantStandardRarityRare
Covert Lethality GUIDE

Understand Covert Lethality

Useful when…

  • Increasing finisher damage on a melee weapon.
  • Adding initial combo without relying on building combo first.

Effects and equipment

At maximum rank, the mod grants +16 initial combo and +100% finisher damage. Rank 0 grants +4 initial combo and +25% finisher damage; rank 2 grants +12 and +75%. It is a standard-slot melee mod with Madurai polarity and base drain 10.

wiki.warframe.com ↗

Ranking investment

This mod reaches rank 3. The last step, 2→3, costs 120 Endo and 5,796 Credits, gaining four initial combo and 25 percentage points of finisher damage from the rank-2 values. Since the mod's drain is 10, include its capacity cost when deciding whether both bonuses justify a slot.

wiki.warframe.com ↗

Related combo options

Corrupt Charge offers +30 initial combo with -50% combo duration; Galvanized Reflex offers heavy-attack efficiency and gains initial combo on melee kills, stacking up to four times. Blood Rush instead adds critical chance that stacks with combo multiplier. These options address combo or critical scaling differently and do not provide Covert Lethality's finisher damage bonus.

Acquisition

The supplied sources list Spy mission Rotation C rewards and several Duviri Endless reward tiers as possible sources. The listed chances vary by location and rotation; they do not ensure a particular result.

Limitations and tradeoffs

  • Uses a standard melee slot and has base drain 10.
  • Finisher damage benefits only when dealing finishers; initial combo alone may be the more relevant bonus for other setups.

Common mistakes to avoid

  • Treating the finisher bonus as a general melee damage increase.
  • Ignoring the -50% combo duration attached to Corrupt Charge when comparing initial-combo options.

Effects and reference details

Rank effects and investment

RankListed effectsUnpolarized drainTotal Endo from rank 0Total Credits from rank 0
0+4 Initial Combo
+25% Finisher Damage
1000
1+8 Initial Combo
+50% Finisher Damage
11301,449
2+12 Initial Combo
+75% Finisher Damage
12904,347
3+16 Initial Combo
+100% Finisher Damage
1321010,143

These are listed mod effects and fusion costs, not final build damage. Matching and mismatched polarities change capacity. Totals assume starting at rank 0.

References and version

Game data version: Pinned public export

Covert Lethality — WARFRAME Wiki ↗wiki.warframe.com ↗
Technical source data for verification

These machine-readable game records support the calculations and factual checks. The wiki references above are intended for reading.

Warframe Public Export ↗Raw game data (JSON) ↗wiki.warframe.com ↗

Original data record ↗

Optional: calculate an upgrade or configurationOpen the calculator when you want a cost estimate or a compatibility check.
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Fusion cost and capacity

0Endo
0Credits
10Target slot drain
RankObserved effectDrainEndo from 0Credits from 0
0+4 Initial Combo · +25% Finisher Damage1000
1+8 Initial Combo · +50% Finisher Damage11301,449
2+12 Initial Combo · +75% Finisher Damage12904,347
3+16 Initial Combo · +100% Finisher Damage1321010,143

Slot polarity changes drain; fusion prices depend on mod rarity and family.

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