Gorilla weigh 350 pounds, are covered in fur, and they can't sweat. It's gonna pass out from heat exhaustion before killing 100 people. They don't have the endurance.
Not to mention they're nap loving, leaf eating animals that are generally docile and have NEVER killed a human in the wild(there's literally zero documented cases ever). When they fight each other it's brief and non-lethal, it happens solely for hierarchy purposes and we know they get anxious about those fights and usually try to avoid them. A gorilla trying to fight 100 people is so far out of it's element