BE THE FINAL BOSSFIELD MANUAL
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UPDATE 1 CASTLE DEFENSE FIELD MANUAL

BE THE FINAL BOSS

Summon minions, defend your castle, and choose the next upgrade after a failed run.

Fix my runCheck codesSee Update 1 events
Play on Roblox
Three boss characters defending a castle beneath a crimson moon in Be The Final Boss
OFFICIAL THUMBNAIL Castle defense under a crimson moon
First runFinish the tutorial
MinionsHold the front line
Skill TreeReview one upgrade
WeaponsClean up hero leaks

Next Upgrade Router

What stopped your last run?

Choose the first failure you noticed to get an upgrade to review and a free alternative.

Goal
First failure
Spending mode

Choose the next gate

Move through the castle by player problem

Start with the problem that ended your last run.

01

Try a code

Copy betheboss, try it in game, and troubleshoot a rejected code.

Open codes →02

First-run order

Summon minions, watch the first waves, and review your Skill Tree and weapons.

Start the route →03

Robux decision

Match a pass to the problem in your run and compare the free route first.

Compare options →04

Castle defense guides

Find guides for your first run, events, mutations, and upgrades.

Open the index →
Armored hero facing a towering green-flamed boss in an official Be The Final Boss thumbnail

Official Update 1

Three events. One new mutation. A wider run checklist.

The Roblox description names Gold Rush, Shard Storm, Cursed Moon, Demonic, three new units, and a Unit Index. Detailed event values and mutation odds are not stated there.

Explore Update 1Plan a mutation run →