The evolution Brutal Muscles is a speed-enhancing, damage-boosting organ that can be put into one of the three slots of your shark in Maneater.
Unlocked by defeating the Infamy Level 10 boss, Captain Robert Brunlett, the Brutal Muscles evolution is a popular choice in the late game.
Brutal Muscles Official Description
“This evolution increases your swimming speed and the damage of your tailwhip.”
How to Unlock the Brutal Muscles Organ
To unlock Brutal Muscles, you’ll need to increase your infamy level to Infamy Level 10. To do this, just eat some humans and then defeat the hunters who come after you.
Once your blue infamy bar has been filled from Infamy Level 9, Captain Robert Brunlett will arrive near your location, looking to end the massacre.
Defeat Captain Robert Brunlett to unlock the Brutal Muscles organ and reap the rewards of 3,350 Protein, 3,350 Fat, and 3,350 Mineral.
Brutal Muscles Parameter Boosts
By upgrading the Brutal Muscles evolution to Tier 5 and equipping it to one of your shark’s three organ slots, you’ll then get benefit from its passive effects and the following ratings parameter boosts:
- +2 Damage
- +10 Speed
Ratings parameters consist of 20 segments, with each segment housing five points each. Applying an organ evolution that gives +5 to a rating will fill the equivalent of one segment.
Brutal Muscles Effects and Abilities
The Brutal Muscles organ evolution bolsters your speed and tailwhip through five passive effects:
|Tier 1||Tier 2||Tier 3||Tier 4||Tier 5|
|Passive: +10% Max Speed, +10 Tailwhip Damage, +10% Acceleration Bonus, +10% Tailwhip Force, +10% Swim Speed||Passive: +15% Max Speed, +15 Tailwhip Damage, +15% Acceleration Bonus, +15% Tailwhip Force, +15% Swim Speed||Passive: +20% Max Speed, +20 Tailwhip Damage, +20% Acceleration Bonus, +20% Tailwhip Force, +20% Swim Speed||Passive: +25% Max Speed, +25 Tailwhip Damage, +25% Acceleration Bonus, +25% Tailwhip Force, +25% Swim Speed||Passive: +30% Max Speed, +30 Tailwhip Damage, +30% Acceleration Bonus, +30% Tailwhip Force, +30% Swim Speed|
|Cost to Upgrade: 6,000 Protein||Cost to Upgrade: 8,000 Protein||Cost to Upgrade: 10,000 Protein and 175 Mutagen||Cost to Upgrade: 12,000 Protein and 350 Mutagen||Tier 5 is the highest upgrade level|
Further Brutal Muscles Details
- Required Age: Pup
- Appearance: The Brutal Muscles organ evolution doesn’t change your shark’s appearance.
- Total Upgrade Materials: 36,000 Protein, 525 Mutagen
- Set Bonuses: The Brutal Muscles organ isn’t part of a set.
*Outsider Gaming may receive a small commission if you click a link from one of our articles onto a retail website and make a purchase. All prices listed were accurate at the time of publishing.