CelSector B2 Walkthrough: Spiders, Wasps and the Queen Wasp
CelSector B2 route: web rooms, wasp nests, the queen wasp boss and the keycard that opens the way to Sector C.
Quick answer: B2 is the hive sector. The route runs through web rooms and wasp nests to the queen wasp, whose arena gates the keycard to Sector C. Clear the web rooms before the boss; they hold clothing chests and the webs make the boss approach worse if you rush.
B2 is the first sector with a real boss wall. The queen wasp is not the hardest fight in the game, but the room around her punishes panic.
Wasp nests keep spawning until destroyed. Shoot them from the doorway instead of fighting in the swarm.
Route overview
| Step | Area | What happens |
|---|---|---|
| 1 | Entry web room | First silk hazards |
| 2 | Wasp nest corridor | Nest turrets and flyers |
| 3 | Hive alcoves | Clothing and capacity pickups |
| 4 | Queen wasp arena | Boss fight, keycard reward |
| 5 | Post-boss room | Chest and exit |
Step 1: the entry web room
The web room teaches the silk hazard. Silk restricts movement, and the spiders use it to set up grabs.
- Break webs from a distance with the shotgun if you have it.
- Kill spiders before they web the floor.
- Do not walk through a web to reach a chest; clear the room first.
The status effects page→ explains the silk timing.
Step 2: the wasp nest corridor
The corridor has wasp nests that act as turrets. They spawn flyers until destroyed.
- Destroy the nest first, not the flyers.
- Use the rifle or SMG on the nest; the pistol is too slow.
- Flyers drop ammo, so the corridor is a net ammo gain if you clear it fully.
The nests are the reason the corridor feels endless on a first pass. Killing the nest ends the spawn.
Step 3: the hive alcoves
The alcoves off the corridor hold the sector's collectibles:
| Pickup | Location |
|---|---|
| Clothing chest | Behind the web curtain in the first alcove |
| Capacity pickup | Second alcove, upper ledge |
| Ammo | Scattered in the nest rooms |
Check both alcoves before the boss door. The secrets page→ lists them in the cleanup order.
Step 4: the queen wasp
The queen wasp is the sector boss. The fight is close-range and add-heavy.
Phase 1: The queen stays high and sends wasps. Clear the adds, then damage the queen when she descends.
Phase 2: The queen drops lower and attacks directly. This is the shotgun window. Stay under her, punish the landing, back out before the sweep.
Rules:
- Kill adds between queen windows; do not let them stack.
- Reset your outfit at the door; the fight punishes grabs.
- Save the sniper for the queen's exposed head, not the adds.
The boss guide→ has the full pattern table.
Step 5: the post-boss room
The queen drops the keycard. The room after the arena has a chest and the exit to Sector C.
Before you leave:
- Web room chests
- Capacity pickup
- Queen wasp defeated
- Post-boss chest
B2 enemies
| Enemy | Threat | Answer |
|---|---|---|
| Spiders | Web + grab | Kill before they web the floor |
| Wasps | Flyers from nests | Destroy the nest first |
| Queen wasp | Boss, adds | Shotgun windows, clear adds |
B2 and the outfit
The web rooms are the worst place to be at stage 3. Silk plus a grab is a long, expensive animation. Reset before the web rooms and again before the queen.
The clothing damage page→ explains why.
FAQ
How do I stop the wasp spawns? Destroy the nest. Killing flyers alone does not end the spawn.
Is the queen wasp optional? No. She gates the keycard to Sector C.
What weapon beats the queen? The shotgun for the close phase, the sniper for the exposed head.
Did I miss a chest in B2? Check the first web alcove and the post-boss room.
Sources
Official source: CelSector on Steam ↗ · CelSector demo on itch.io ↗ · Steam news and patch notes ↗