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Sonic Bloom

Overview

Item Details
English Name Sonic Bloom
Japanese Name ソニック・ブルーム
Chinese Name 扩增音爆
Weapon Type Growing directional projectile (forward-facing, expanding)
Evolution Material Weapon Power-Up
Evolves To Wave Beam
Pickup Priority B

Effect and Behavior

Fires projectiles in the player's movement direction that grow larger as they travel. Each shot starts small and expands while in flight — by the time it reaches its range limit it covers a significantly wider area than it started with. Area-boost passives compound directly with the growth mechanic, making Candelabrador an exceptionally high-value pick. Level scaling increases projectile count, damage, and growth rate.

Unlocked by surviving 15 minutes with Brownie (Operation Guns DLC). Directional dependency means positioning is important — always move toward dense enemy clusters to maximize forward-facing coverage. The evolution material, Weapon Power-Up, also grants a Revival when acquired, making the progression toward evolution simultaneously a survivability investment.

Evolution Conditions

Max Sonic Bloom (Lv 8), carry Weapon Power-Up (an item that randomly levels one equipped weapon and grants Revival +1), and open an elite-drop chest after 10:00 to evolve into Wave Beam.

Wave Beam Effect

After evolution a charge mechanic activates when standing still: stopping builds a charge that releases a powerful auto-aimed blast significantly larger and stronger than normal projectiles. Moving fires the regular growing shots; standing briefly triggers the charge blast. Both modes remain usable, enabling flexible two-mode combat depending on the situation.

Strengths

  • Growing forward projectile covers increasing area at range — area passives compound with the expansion
  • Candelabrador synergy is exceptional — size bonuses amplify both the starting and ending size
  • Weapon Power-Up grants Revival +1, making the evolution path also a safety investment
  • Post-evolution two-mode combat (moving shots vs. standing charge) adds tactical flexibility

Weaknesses

  • Requires the Operation Guns DLC
  • Unlocked only by surviving 15 minutes with Brownie
  • Directional dependency — rear and side enemies are difficult to hit without repositioning
  • Standing to charge is risky when surrounded by enemies

Recommended Characters

  • Brownie: the unlock character — natural starting fit
  • Gennaro: extra projectile count adds shots per volley
  • Imelda: +10% Growth speeds evolution

Recommended Passives

  • Weapon Power-Up: mandatory for evolution; Revival bonus applies on pickup (top priority)
  • Candelabrador: area expansion compounds with the growing projectile — highest-value passive for this weapon
  • Spinach: +10% Might raises per-shot damage across all growth stages
  • Duplicator: extra projectile count adds shots per firing cycle

Synergistic Arcanas

  • IX Divine Bloodline: crit compounding with wide-area growing projectile coverage
  • XX Silent Old Sanctuary: projectile +1 and speed bonus increase shot density

Strategy and Tips

  • Early (0–10 min): Level Sonic Bloom and prioritize Candelabrador immediately — the area bonus transforms the weapon's effective coverage. Always face dense enemy clusters when firing.
  • Mid (10–20 min): Collect Weapon Power-Up and evolve into Wave Beam. The Revival bonus from Weapon Power-Up applies on pickup, giving a safety margin during the leveling phase.
  • Late (20+ min): Learn the charge timing — brief pauses during lulls between waves generate charge blasts that can delete elite enemies and bosses. Candelabrador stacking makes both shot modes cover massive areas.

FAQ

Q: How do I unlock Sonic Bloom?
A: Survive 15 minutes with Brownie. The Operation Guns DLC is required to access the character.

Q: Where does Weapon Power-Up drop?
A: From field pickups and level-up rewards. Each pickup immediately levels a random equipped weapon and grants Revival +1, so collecting multiple copies benefits the entire build, not just the evolution.

Q: When does the charge blast fire?
A: After evolving into Wave Beam, standing still builds a charge that automatically releases as a powerful auto-aimed blast. Charge does not build while moving — brief deliberate pauses trigger it.