lockfu
Vyper
Assassin · Rapid Fire

Vyper

Slither in and assassinate enemies

With a powerful weapon (and deadly venom to match), Vyper can slither into the back of teams and assassinate high-priority targets in a storm of bullets.

GunnerSlipperyRat-a-Tat
BgunBspiritBhybridD47.4% win rateOpen in simulator

Builds

optimised by the simulator · generated 2026-10-23
≥ 25% of offensive souls in each; vitality is free.

Lane

5k≈ 6–9 min
100 DPS1,932 EHP> 10 s TTKSimulate
Buy
7%Headshot Booster8008%Extra Health8008%ActiveGrit80011%Extra Charge80021%ActiveCold Front1,600
Abilities
Inventory
4.8k

Early mid

12k≈ 13–16 min
282 DPS3,941 EHP6.6 s TTKSimulate
Buy next
12%Spirit Shredder1,60017%Enchanter's Emblem1,60014%Spirit Lifesteal1,600Upgrade15%Weapon Shielding1,60022%Improved Spirit1,600Upgrade48%Rapid Recharge3,200
Upgraded: Sold:
Abilities
Inventory
12k

Mid game

20k≈ 20–24 min
407 DPS6,001 EHP6.8 s TTKSimulate
Buy next
19%ActiveAlchemical Fire3,200Upgrade20%Spirit Rend3,20010%Battle Vest1,60012%Mystic Vulnerability1,60012%Suppressor1,600
Upgraded: Sold:
Abilities
Inventory
20k

Late game

32k≈ 30–35 min
652 DPS6,777 EHP4.3 s TTKSimulate
Buy next
8%Mystic Shot1,6007%ActiveSpirit Sap1,600Upgrade26%Boundless Spirit6,400Upgrade32%Escalating Exposure6,400
Upgraded: Sold:
Abilities
Inventory
32k

Very late

45k≈ 40 min +
805 DPS8,734 EHP4.1 s TTKSimulate
Buy next
7%Bullet Resilience3,200Upgrade22%ActiveInfuser6,4006%ActiveCold Front1,600Upgrade22%ActiveFocus Lens6,400
Upgraded: Sold:
Abilities
Inventory
44.8k

Each phase lists what to buy since the previous one; the % on a card is how much of the build's score you lose without it. Lit pips under an ability are its upgrade tiers (green: new in this phase). Hover anything for details.

How builds are chosen

For each net worth, the optimiser searches items and ability upgrades that maximise the score: damage per second against the reference enemy × effective health^weight, averaged over short, standard and long fights, each both fresh and mid-match (long cooldowns still recovering from the previous fight). Each checkpoint starts from the previous one's items, so the builds read as a path.

Gun, spirit and hybrid differ only in where the offensive souls go. The fight assumptions (accuracy, distance, the target…) are on the Data page and adjustable in the simulator.

Abilities

Ability 1
Screwjab Dagger
10s
2 charges

Throw a dagger, dealing
spirit damage and applying slow.

Every subsequent dagger against the same target stacks in
spirit damage and slow.

50
Damage
+0.8 × spirit power
28%
Move Speed
25
Damage per Stack
+0.4 × spirit power
12%
Move Speed per Stack
Stack Duration
10s
scales with ability duration
Max Stacks
3
Cast Delay
0.2s
Charge Delay
4s
scales with charge cooldown reduction
  1. 1Tier 1
    —
  2. 2Tier 2
    On Hit: -8% Bullet Resist and -6% Bullet Resist per Stack
  3. 5Tier 3
    +2 Max Stacks
    -2s Charge Delay
    On Hit: Refund 55% Charge Cooldown
Fully simulated

• Each dagger that hits within StackDuration adds a stack (up to MaxStacks): later daggers deal DamagePerStack more per stack, and the T2 bullet resist reduction grows per stack.

• The T3 refund is applied as a shorter charge cooldown (refund share × ability hit rate). The slow is not scored.

Values are base values with their scaling; the simulator shows them at a chosen net worth and build.

Growth without items

HealthGun DPS ×10Spirit power ×10
05001,0001,5002,00008k16k24k32k40k48k
Value by net worth

Boons come with net worth; gun DPS is every bullet hitting at close range, no headshots. Items and investment bonuses come on top (see builds).

Patch history

  • ▼Slither T3 barrier duration reduced from 5s to 4s 2026-09-16
  • ▼Petrifying Bola cooldown increased from 105s to 115s 2026-09-16
  • ▲Petrifying Bola radius increased from 8m to 12m 2026-08-12
  • ▲Petrifying Bola petrify duration increased from 2s to 2.2s 2026-08-12
  • ▲Screwjab Dagger T3 now also reduces charge delay from 4s to 2s 2026-06-30
  • ▲Slither T3 spirit scaling increased from 0.6 to 0.8 2026-06-30
  • ▲Screwjab Dagger T2 bullet resist per stack from -5% to -6% 2026-05-22
  • •Screwjab Dagger T3 now also increases max stacks by 2 2026-05-22
  • ▼Lethal Venom cooldown increased from 24s to 28s 2026-04-30
  • ▲Lethal Venom T2 increased from -8s Cooldown to -12s 2026-04-30
  • ▼Lethal Venom cast range reduced from 15m to 10m and now scales with boons (0.2) 2026-04-30
  • •Fixed Armor Piercing Rounds doing damage through Petrify 2026-04-30
  • ▲Health per boon increased from 33 to 35 2025-11-21

Weapon

The Rattler
Bullet damage
6.58
Fire rate
14.3 /s
Magazine
24
Reload
1.6 s
Falloff
15–33 m
Headshot
×1.65
DPS
94 / 48.1

Base stats

Health
780
Health regen
2
Move speed
6.9
Sprint speed
1.6
Stamina
4
Light melee
50
Heavy melee
116
Headshot damage taken
1

Per boon

Bullet damage
+0.178
Health
+35
Melee damage
+1.58
Spirit power
+1.1

35 boons in all, the last at 49.2k souls.

Spirit scaling
Max Move Speed+0.0138 per spirit

Investment bonuses

SoulsWeapon dmgBase healthSpirit
800+9%+9%+7
1.6k+12%+12%+11
2.4k+15%+15%+15
3.2k+18%+20%+19
4.8k+46%+38%+38
6.4k+54%+42%+45
8k+62%+46%+52
11.2k+74%+50%+59
16k+86%+54%+66
22.4k+100%+60%+75
28.8k+115%+66%+100

Souls spent in a category (each owned item's full price) unlock the highest tier reached. The biggest step is at 4.8k; after it each tier adds less per soul (weapon: +17.5% per 1k souls up to it, +5% per 1k to the next), so piling souls into one category has diminishing returns. Builds and tier lists include it.