A character steps on a landmine and is blown to bits in a slightly gory explosion. His severed head is prominently featured and played with like a toy. (All is done for comedic effect.)
Jeff chases after a bat and takes a giant bite into the animal. We hear a crunching sound and we see blood all around his mouth.
The violence is very bloody and over exaggerated but it's played for comedy and isn't intense or frightening.
The beginning of the movie has a long graphic scene in a war movie they are making containing gore and violence. This scene is a satire on many other movies (there are a lot of references to "Platoon" and "Saving Private Ryan"), although the violence is toned down in a way that conveys it as a low-budget film. Many people get shot in the face and suffer wounds by other weapons such as bayonets. There is an unrealistic amount of spraying blood used for comedic effect
In this same fake war movie, a man suffers a disemboweling by a bayonet, though he does not act nearly as wounded as the visual effects suggest, and appears to survive as though it's a minor flesh wound, even attempting to put his insides back into his body later. This is done satirically.
Tugg is shown with somewhat fake looking severed hands.
Offscreen, Tugg kills a panda then proceeds to wear its skin as camouflage. This scene is much less graphic than the scenes involving human violence, probably deliberately.
Multiple shootouts occur between several characters, some are real bullets others are blanks (in the context of the film).
Halfsquat, a child, stabs Tugg and is consequently thrown off a bridge by Tugg.
This is a satire and all the really graphic violence is taken very lightly or presented in a comical and slapstick fashion. The "serious" segments aren't so graphic.