Event Overview: Extended Deadline & Structure
Blood Purge launched December 4, 2026, originally ending January 7, 2026. An 11-day extension pushed the deadline to January 18, 2026—45 total days to farm crystals through Zombie vs Human faction matches.
Tier Requirements & Rewards
Four Peak Legend tiers require progressively higher crystals:
- Peak Legend 4: 1500 crystals (minimum for RPK)
- Peak Legend 3: 2000 crystals
- Peak Legend 2: 2750 crystals
- Peak Legend 1: 3500 crystals (max tier)
Weekly milestones provide bonus crystals: Week 1 grants 500, scaling to 1250 by Week 4—totaling 3000+ crystals, double the base RPK requirement.
Why the Extension Matters
The extension reduces daily commitment from 5-7 hours to 3-4 hours for Peak Legend 4. Combined with the December 25 login bonus (150% multiplier), you can earn 420-600 crystals in one session—nearly 40% of the RPK requirement.
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RPK Unlock Requirements: Exact Numbers
The Vermilion Silence RPK needs 1500 crystals minimum. Across 45 days, that's 33 crystals daily. With weekly milestones (3000+ total), you only need 16 crystals daily from matches—less than one Zombie faction match.
Additional Rewards
Crystal Monsters yield 15-25 crystals per kill. Blood Crystal Katar and Claymore melee weapons unlock at intermediate tiers. Peak Legend 1 (3500 crystals) grants exclusive profile frames, emotes, and priority event access.
Fastest Path Formula: Optimized Daily Routine
Maximize crystals through faction selection, match performance, and multiplier stacking.
Priority 1: Weekly Milestone Completion
Consistent participation across all seven days guarantees milestone completion. Missing two days jeopardizes Week 4's 1250-crystal bonus—83% of base RPK requirement.
Front-load playtime during peak hours (7-10 PM) when queue times drop to 45-90 seconds. Complete 8-12 matches/hour vs 5-7 during off-peak.
Priority 2: High-Efficiency Mode Selection
Zombie faction: 35-50 crystals per 12-15 min match (2.9-3.3 crystals/min) Human faction: 30-45 crystals per 15-18 min match (2.0-2.5 crystals/min)
2-Zombie squads boost earnings 200-300%, reaching 280-400 crystals/hour. On December 25 with 150% multiplier, this hits 420-600 crystals/hour—the event's peak rate.
Priority 3: Bonus Multipliers
Three multipliers stack:
- Performance Bonus: 15+ kills = +40%
- Victory Bonus: Faction win = +15%
- Strike Pass Bonus: Active pass = +15%
Combined 70% bonus on a 50-crystal match = 85 total crystals. For Strike Pass activation, buy Blood Strike golds online at BitTopup for fast delivery.
Time Investment Calculator
Starting Fresh (1500 crystals)
- Without milestones: 45 crystals/day = 2 matches = 27 min daily
- With milestones: 22 crystals/day = 1 match = 13.5 min daily
Mid-Progress (750 remaining)
- Without milestones: 38 crystals/day = 2 matches = 27 min daily
- With milestones: 12 crystals/day = 1 match every 3 days
Peak Legend 1 (3500 crystals)
- Without milestones: 106 crystals/day = 5 matches = 67 min daily
- With milestones: 53 crystals/day = 3 matches = 40 min daily
Mode Efficiency: Zombie vs Human
Zombie Faction Analysis
Aggressive close-quarters combat with Blood Rage (12s X-ray vision + speed boost). Performance distribution:
- Low (5-10 kills): 35-38 crystals in 14-15 min
- Average (11-14 kills): 40-45 crystals in 12-14 min
- High (15+ kills): 48-50 crystals in 11-13 min
Shorter match duration (12-15 min) creates 15-20% time advantage. With 2-Zombie squad bonus, sustain 280-400 crystals/hour during peak.
Human Faction Balance
Defensive positioning yields 30-45 crystals per 15-18 min match. Higher win rates (60-70% vs Zombie's 50-55%) mean more consistent +15% victory bonuses, but 25-30% efficiency deficit vs optimized Zombie farming.
Squad vs Solo Multipliers
Solo Zombie Example:
- Base: 42 crystals
- All bonuses: 78 crystals
2-Zombie Squad Example:
- Base: 42 crystals
- Squad bonus (+250%): 147 crystals
- All bonuses: 272 crystals
Squad delivers 249% more crystals (272 vs 78), reducing 1500-crystal requirement from 19 solo matches to 6 squad matches.
Advanced Farming Techniques
Mission Stacking
Target three concurrent goals per match:
- 15+ eliminations (+40%)
- Faction victory (+15%)
- Crystal Monster elimination (15-25 bonus)
Run Zombie faction with Bizon SMG (32-Round R.I.P Drum) for sustained aggression and ammo reserves.
Peak Hour Optimization
Queue duration impacts efficiency. 45-second queue + 12-min match = 3.3 crystals/min vs 3-min queue + 12-min match = 2.8 crystals/min—18% improvement from timing alone.
Peak hours (7-10 PM) deliver 45-90 second queues vs 2-4 min off-peak. Concentrate 80% of farming here.
Weapon Loadout Impact
RPK Stats:
- Body damage: 34
- Head damage: 68
- Fire rate: 650 RPM
- TTK: 0.37s
- Magazine: 100 rounds
- Range: 45m
For Zombie farming: KAG-6 CQB with Extended Barrel Level 20 (+18% range) and Extended Vertical Grip Level 40 (-23% vertical recoil).
Common Mistakes
- Ignoring weekly milestones: Forfeit 3000+ bonus crystals
- Solo farming: Sacrifice 60-70% potential earnings
- Off-peak grinding: Reduce crystals/hour by 15-25%
- Skipping December 25: Miss highest-value farming day
F2P vs Premium Pass
F2P Viability
F2P players easily secure RPK. 1500 crystals = 33 daily across 45 days, achievable through one Zombie match/day (42.5 average). With milestones, need only 16 crystals daily—half a match.
Success factors:
- Weekly participation for milestones
- Peak hour farming (7-10 PM)
- 2-Zombie squad formation
- December 25 multiplier (420-600 crystals/session)
Strike Pass Benefits
+15% multiplier across 100 matches:
Without Pass: 100 × 42.5 = 4250 crystals With Pass: 100 × 48.9 = 4890 crystals Net gain: 640 crystals (43% of RPK requirement)
Saves ~67 min total playtime for RPK-only players. More valuable for Peak Legend 1 targets (3500 crystals), saving 10+ hours.
Spending Priorities
- Strike Pass activation (best efficiency)
- Weapon attachments for farming loadout
- Direct crystals only in final 48 hours if needed
BitTopup's recharge services offer competitive rates with instant delivery for time-sensitive multiplier windows.
Last-Minute Grinding Plans
7-Day Plan (Starting Fresh)
Target: 1500 crystals Daily: 214 crystals = 5 matches = 60-75 min
Execution:
- Peak hours (7-10 PM): 3 matches with 2-Zombie squad (360-450 crystals)
- Off-peak: 2 matches solo/partial squad (120-180 crystals)
- Target 2-3 Crystal Monster kills/session (30-75 bonus)
Week 4 milestone (1250 crystals) reduces requirements by 6 sessions—90 min saved.
5-Day Plan (Mid-Progress)
Target: 750 crystals Daily: 150 crystals = 3-4 matches = 36-54 min
Tactics:
- 100% peak hour farming
- Permanent 2-Zombie squad
- 15+ kills in 75%+ matches
48-Hour Emergency
Target: 500 crystals Daily: 250 crystals = 5-6 matches = 60-78 min
Protocol:
- Maximize December 25 multiplier if available (420-600 crystals in 3 hours)
- Continuous peak hour farming both days
- Pre-formed squad (eliminate queue variance)
- Accept 12+ kill matches vs restarting for 15+
When It's Too Late
800+ crystals with <48 hours requires 2-3 hours continuous optimal play—achievable but demanding. Beyond 1000 crystals with <36 hours becomes improbable without December 25 multiplier.
January 18 is a hard cutoff—crystals don't carry forward. Redirect resources to Season 9 (January 15) and Tournament (January 10-12) if unattainable.
Resource Management
Event Bundle Value
Strike Pass benchmark: +15% across 100 matches = 640 bonus crystals
Bundles must provide >640 crystals per equivalent currency to exceed Strike Pass value. Most bundles target convenience (immediate crystals) over efficiency (multiplied earnings).
Gold Priorities
- Weapon attachments (Extended Barrel Level 20, Vertical Grip Level 40)
- Strike Pass if purchasable with gold
- Crystal bundles only if facing deadline failure
- Cosmetics deferred until post-event
Diamond Efficiency
Strike Pass offers best diamonds-per-value through +15% multiplier. Reserve diamond spending for emergencies (final 48 hours, <300 crystals remaining).
BitTopup Advantages
- Competitive pricing without markups
- Instant delivery for time-sensitive windows
- Secure payment processing
- 24/7 availability during peak farming
- Fast crediting for December 25 multiplier day
Post-Event Reality
Will RPK Return?
Limited-time skins typically don't reappear. Historical precedent shows 15-20% of exclusive items return 6-12 months later at premium pricing or harder requirements. Expect permanent unavailability or significantly increased future difficulty.
Base RPK remains accessible through standard progression—only Vermilion Silence cosmetic becomes unavailable.
Alternative LMGs
Standard RPK: Identical stats (34 body, 68 head, 650 RPM, 0.37s TTK), default appearance, normal progression.
Attachment optimization: Extended Barrel (+18% range) and Vertical Grip (-23% recoil) provide performance gains exceeding cosmetic benefits.
Future Event Lessons
- Early activation: December 15 Strike Pass = 34 days multiplier vs January 1 = 20 days (70% more duration)
- Weekly consistency: 3000+ milestone crystals exceed base RPK requirement
- Squad optimization: 200-300% bonus = largest efficiency multiplier
- Time-limited multipliers: December 25 enables 40-50% total in one day
Expert Tips
Pro Player Tactics
- Positioning: Prioritize central map control over spawn camping (15-20% more encounters/min)
- Ability timing: Activate Blood Rage when 3+ opponents cluster in confined spaces
- Loadout redundancy: Bizon SMG primary + high-damage secondary for ammo availability
- Squad roles: Designate one player for Crystal Monsters, one for elimination pressure
Time Zone Optimization
Switch servers during local off-peak to access adjacent regions' peak populations. EST player at 2 PM switches to PST (11 AM PST) for 90-second queues vs 3-min, improving crystals/hour by 12-15% despite 20-40ms latency increase.
Progress Tracking
Track daily: Date | Matches | Crystals | Milestone Progress | Days Remaining | Daily Requirement
Compare personal average vs Zombie baseline (42.5 crystals). Sustained <38 crystals indicates loadout/tactical issues.
FAQ
When does Blood Purge end? January 18, 2026, after 11-day extension from original January 7 deadline.
How many crystals for RPK? 1500 minimum (Peak Legend 4). Higher tiers: 2000 (PL3), 2750 (PL2), 3500 (PL1).
Fastest farming mode? Zombie faction with 2-Zombie squad: 280-400 crystals/hour during peak (7-10 PM).
Can F2P get RPK? Yes. 1500 crystals = 33 daily across 45 days = one Zombie match/day. With milestones (3000+ crystals), need only 16 daily.
Hours to complete? Peak Legend 4: 6 optimized squad matches = 72-90 min total. F2P solo: 35-40 matches = 7-9 hours distributed across event.
RPK after January 18? Becomes unavailable. Limited items typically stay exclusive; 15-20% return 6-12 months later at premium pricing. Base RPK remains accessible, but Vermilion Silence skin likely permanent unavailable.
