In some worlds children have their parents taken or killed. In a special story, a young girl is abused, by presumbly her father. (Read more about the story above)
One world has you team up with somebody who brutally tortures for information. After an innocent reveals info, he is then beheaded. It seems to be played for comedic affect, as afterwards they are still alive, and in no pain, the people who are tortured are happy that they don’t have a head. This world does contain mild blood with the enemies. Can be slightly disturbing. The player is also given the option to torture. Though the player just slashes their sword, or whatever weapon they are using.
There is the option to change to the Japanese character designs. Many of the characters in Japan are VERY oversexual. Though not completely nude. Clevage or short dresses to almost nude characters. The North American designs have less of this problem (with a few exceptions)
After being tortured, one character is beheaded by spikes. Not very graphic, no blood or gore is shown. Though some mild blood on the forehead. It is unclear wether this is blood, since all enemis have them. though can still be disturbing.
Though characters die very often. No blood or gore is shown. Enemies are flung off screen. And teamates bodies just flash red for a second or so with a voiceline. When the player dies they are given to option to revive or go back to the lobby. Dead teamates graves follow you until you finish the level. Edit: One world has characters that have bruses and mild blood.
While not really abandoned, children and parents are seperated by invaders. However there is the optional choice to help the people taken captive. The game often rewards this with the secret collectibles for that chapter. An entire level is centered around saving captive children.
In a special story, One character, after years of being abused, abuses her abuser (i should reword that), she then flips a coin, and then shoots and kills her abuser. In adulthood, she often abuses and kills her enemies (note that these special stories are in a manga type style, instead of the pixel style during gameplay, this makes it much more disturbing) These special stories are not required, and have no actual gameplay, but a small reward after watching it (you could just skip it and get the reward)
Much, much death. Wether enemies, you or your team. Story characters or enemies dying. All in different ways. Most are not disturbing. Some are tortured.
(SPOILERS) An entire chapter (chapter 3) has ghosts as the main enemy. They are played as obsticles and aren’t really designed to be scary. But be weary