"10% (+10% per stack) chance to collapse an enemy for 400% base damage. Corrupts all Tri-Tip Daggers." Void white item from SotV DLC. Each hit has a 10% chance to apply a Collapse stack. After 3 seconds from the first Collapse stack, all stacks detonate simultaneously for 400% base damage each. More stacks in the 3-second window means a larger explosion. Proc chance scales with the attack's proc coefficient. Corrupts all Tri-Tip Daggers.
Detonate
All stacks at once
Death Mark
Counts as debuff
Stacking
+10% chance/stack
How Collapse Works
Collapse is a stackable debuff with a delayed all-at-once detonation. When the first Collapse stack lands on an enemy, a 3-second timer starts. Every additional Collapse proc within those 3 seconds adds another stack. When the timer expires, every stack detonates simultaneously for 400% base damage each. The more stacks you apply in the 3-second window, the bigger the burst. After detonation all stacks are removed and the cycle can restart.
Proc chance scales with the attack's proc coefficient. A hit with 1.0 proc coefficient has the full 10% chance. A hit with 0.5 proc coefficient has 5% effective chance. Low proc coefficient skills (Ukulele at 0.2, Plasma Shrimp at 0.2) rarely proc Collapse. High proc coefficient primary attacks make Needletick much more consistent.
The goal is to stack as many Collapse procs as possible in the 3-second window. At high attack speed with multiple Needletick stacks, you can land 5-10+ Collapse stacks before detonation. That is 2000-4000% base damage in a single burst. Against bosses with high HP, the burst potential of stacked Collapse can match or exceed sustained bleed damage.
Stacking Needletick increases proc chance, not damage per stack. At 1 stack: 10% chance per hit. At 3 stacks: 30% per hit. At 5 stacks: 50% per hit. The 400% damage per Collapse stack is fixed. More Needletick stacks mean more Collapse procs in the 3-second window, which means more total damage on detonation. Stacking is strong because higher proc rate directly multiplies burst output.
Collapse counts as a debuff for Death Mark. Death Mark activates when an enemy has 4 or more unique debuffs, increasing all damage to them by 50%. Collapse is one debuff. Combined with slow from Her Biting Embrace, burn, and bleed from Shatterspleen, enemies can hit the Death Mark threshold and take 50% more damage on Collapse detonation.
Shatterspleen's bleed still works alongside Needletick. Shatterspleen applies Bleed on crit separately from Collapse. Having Needletick does not remove or replace the Shatterspleen bleed. You can have both Collapse and Bleed active on the same enemy simultaneously. The two debuffs deal their damage independently.
Collapse Damage by Stack Count (per detonation)
Stacks landed in 3s
Total burst damage
Likely scenario
Notes
1
400% base
Low attack speed
Weak - similar to bleed
3
1200% base
Mid attack speed
Solid burst on minibosses
5
2000% base
High attack speed
Strong boss damage
8
3200% base
High speed + 3+ Needletick
Massive burst window
10
4000% base
Ideal build
Boss-killing detonation
Every Collapse stack in the 3-second window adds another 400% base damage to the burst. The math is simple - more stacks always means more damage. The practical ceiling is determined by your attack speed, number of Needletick stacks, and proc coefficient. High attack speed survivors can realistically hit 8-12 stacks in a 3s window at 30-50% proc chance.
Needletick vs Tri-Tip Dagger
Needletick - Better When:
+Low attack speed survivors who can't consistently reset bleed
+Short fights where burst matters more than sustained DoT
+Low stack counts where bleed wouldn't compound effectively
+Builds that want another Death Mark debuff source
+Void runs where you want to stay in the void item ecosystem
Tri-Tip Dagger - Better When:
+High attack speed where bleed refreshes consistently
+Long sustained boss fights where bleed compounds over time
+Many stacks where 100%+ bleed chance means constant refresh
+Shatterspleen builds where Bleed triggers on-death explosions
+Survivors with consistent rapid multi-hit attacks
Best Survivors
Commando
S Tier
Commando's Suppressive Fire fires 8 bullets rapidly at 1.0 proc coefficient each. Within the 3-second Collapse window, Suppressive Fire alone can land 4-6 Collapse stacks at 30%+ proc chance. With Predatory Instincts attack speed and multiple Needletick stacks, Commando consistently builds massive Collapse detonations against any target.
Huntress
S Tier
Huntress attacks at the highest rate in the game. Arrow Rain hits multiple enemies simultaneously and each hit can proc Collapse independently. Against a single target, Flurry of Arrows naturally crits every 3rd hit at 1.0 proc coefficient. High attack speed means more Collapse procs per 3s window than almost any other survivor.
Mercenary
A Tier
Eviscerate's many rapid hits each have a chance to proc Collapse at 1.0 proc coefficient. Against a boss during Eviscerate, the sheer number of hits in 3 seconds builds Collapse aggressively. Mercenary's melee commitment means he can always be attacking during the full 3-second accumulation window.
Bandit
A Tier
Bandit's Burst fires multiple pellets at once, each with 1.0 proc coefficient. A single Burst cast can land 2-3 Collapse stacks instantly from the pellet spread. With Backstab guaranteeing crits from behind, Bandit builds Collapse fast and can burst down priority targets by timing the Collapse detonation with Lights Out for the kill.
Railgunner
B Tier
Low fire rate limits Collapse stacking severely. Railgunner can only land 1-2 Collapse procs in a 3-second window even at max attack speed. Tri-Tip Dagger or other proc items are generally better choices. Needletick is worth taking on Railgunner mainly for the Death Mark debuff contribution rather than for heavy Collapse stack accumulation.
Key Synergies
Predatory Instincts attack speed increases Collapse stacks per 3-second window. Every Collapse proc requires a hit. More hits per second from attack speed buffs means more Collapse procs before detonation. Predatory Instincts at 100% crit gives up to 84% attack speed bonus. On fast survivors like Huntress and Commando this translates directly to 2-4 extra Collapse stacks per window.
Shatterspleen bleed applies alongside Collapse for Death Mark stacking. Needletick corrupts Tri-Tip Daggers but not Shatterspleen's bleed mechanic. At 100% crit, every hit bleeds via Shatterspleen and has a chance to Collapse via Needletick. Both debuffs are active simultaneously. Combined with slowness from Her Biting Embrace and burn from Wake of Vultures, reaching Death Mark's 4-debuff threshold on every enemy becomes trivial.
57 Leaf Clover improves Collapse proc consistency. Collapse uses a luck-influenced roll. With Clover re-rolling failed procs for favorable outcomes, the effective proc rate approaches its theoretical maximum. At 20-30% Collapse chance with 2-3 Clovers, nearly every hit procs Collapse, filling the 3-second window with maximum stacks reliably.
Collapse detonation damage is based on base damage, not total damage. The 400% per stack is multiplied by your base damage stat (including level scaling), not your total damage including item bonuses. This means items like Shaped Glass (+damage %) or Laser Scope (+crit damage) do not multiply Collapse detonation damage as significantly as raising base stats directly through level scaling.
Enemies also inflict Collapse on you with Needletick if they have it. In void-corrupted stages and Void Fields, enemies can have Needletick in their item pool. A pack of void-corrupted Lesser Wisps with Needletick can kill you rapidly since their combined hits stack Collapse on the player quickly. The same mechanic that makes Needletick powerful for you works against you when enemies hold it.
Frequently Asked Questions
What does Needletick do in Risk of Rain 2?
Needletick is a void white item that gives a 10% (+10% per stack) chance on hit to apply a Collapse stack to an enemy. Three seconds after the first Collapse stack lands, all stacks detonate simultaneously dealing 400% base damage per stack. The more stacks you accumulate in the 3-second window, the larger the burst. Proc chance scales with the attack's proc coefficient. It corrupts all Tri-Tip Daggers.
Is Needletick better than Tri-Tip Dagger?
It depends on your build. Needletick is better for low attack speed survivors, short fights, and burst scenarios where you need damage to detonate in a short window. Tri-Tip Dagger is better for high attack speed builds where bleed stacks accumulate and refresh reliably over long fights - at very high stack counts sustained bleed outpaces Collapse burst. Needletick is generally worth taking for the Death Mark debuff contribution alone in most builds.
How do you stack Collapse faster?
Stack more Needletick items (raises proc chance by 10% each), increase attack speed (more hits per second means more chances), and use high proc coefficient attacks (1.0 coefficient gets the full 10% per hit). 57 Leaf Clover re-rolls failed Collapse procs, effectively raising the proc rate further. Survivors with rapid multi-hit abilities like Commando, Huntress, and Mercenary build the most stacks per 3-second window.
Does Collapse count for Death Mark?
Yes. Collapse counts as one unique debuff toward Death Mark's 4-debuff threshold. With Collapse plus bleed (Shatterspleen), slow (Her Biting Embrace), and burn (Wake of Vultures or Ignition Tank), enemies hit the threshold regularly and take 50% more damage on Collapse detonation. Needletick is a free passive Death Mark contribution for any build that uses it.
Does Needletick work with Shatterspleen?
Yes. Needletick corrupts Tri-Tip Daggers but not Shatterspleen. Shatterspleen's on-crit bleed is completely separate from Collapse and both can be active on the same enemy simultaneously. At 100% crit, every hit bleeds via Shatterspleen and has a chance to add a Collapse stack. The two debuffs deal their damage independently and both count toward Death Mark.
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