Complex sentence: When Shredder takes down Splinter, he throws Splinter into the sewer dispoal pipes in front of April and the Turtles and leaves the area with a broken arm.
Split into simpler sentences: When Shredder takes down Splinter, he throws Splinter into the sewer dispoal pipes in front of April and the Turtles. Shredder then leaves the area with a broken arm.