The movie is based on an extremely dangerous amusement park, and therefore a lot of characters are hurt. This is purely slapstick, and not particularly violent. Blood is very rarely shown, and the comedy focuses more on characters getting hit in the face or groin.
A long gash is shown on a character's lower leg, a result of him cutting it on a broken slide. The injury is roughly the length of his calf and relatively thin. Blood and bruises are visible, but it's not overly gory. We do not see him receive the injury, we only see the aftermath. A closeup is very briefly shown, but the wound is covered with duct tape within less than a second. The character seems to be in very little pain.
A man is blasted with a high-pressure hose down a waterslide. The force is extremely powerful, knocking him off his feet, making him smack his face off the hard plastic, and sending him down the waterslide.
An elderly man attempts to rotate himself on a metal monkey bar. The bar breaks and hits the man in the face, and he lands hard on the ground with his knees over his head. He is shown to be okay.
An elderly man attempts to operate a stove, and as he tries to take a closer look, a fireball bursts into his face. This doesn't seem to hurt him at all.
A man leaps from a tree onto the metal roof of a shed, before bouncing off and onto the ground.
A man goes down an alpine slide with no breaks or steering. At a sharp turn, he flies off the slide and lands on his face.
A man grabs the quills of a porcupine in an attempt to catch it.
Two people are playing on a spring rocker in a playground. One on the people is too heavy, and when he lets go, the other person is flung backwards.
A man is put in a catapult and flung through a wooden barn.
A man stands up in a moving car, attempting to jump through the doors of a moving bus. However, the car sharply breaks before he can do so, and he is thrown onto the car's dashboard.
The more shocking stunts in the movie are and are usually filmed in a single shot which makes the violence far more hard-hitting.
A man points to an Asian girl and says, "You're lucky we saved your people in that war."