Sex, nudity nor sexual jokes or themes or isn't involved.

does not contain anything related

While animated, the violence, blood and gore is explicit and extremely graphic.

Brian dies by bon killing him offscreen. Graphic jump scare.

In a lot of scenes, Bon has blood all over him from his victims.

there are scenes that contain a lot of blood, or even explicit gore. The Walten Files is itself an extremely violent series.

BunnyFarm and Relocate Project are the only episodes that have some moderate profanity.

words like f*ck, dumb*ss, sh*t, and some milder profanities are said.

in "Lucky You", It is revealed that Sophie has been taking pills due to the medication she has.

Alcohol and Drugs are heavy topics in this series.

Various closeups of disturbing, unnatural and violent images and loud sounds.

The Reversed and distorted music can make the series have more of a terrifying theme to it

The robots do look pretty terrifyin'

The robots move (dance almost) in unnatural and frightening ways.

It says it right at the genre of the series (which is ARG, aka Alternate Reality Game). If you do not know what ARG's are, it is a series that you need to solve the plot and lore by yourself. ARG's are usually scary, but some aren't. If you really want to see this, beware from loud jumpscares, disturbing imagery, frightening secrets and of course, bodies being stuffed into animatronics.