Tone doesn't come across very well with an online translator.
Depending on how old the videos or screenshots in question are, there were a few people that thought the graphics and/or character design were too cartoony. For the graphics, at least, much of that was before Larian had even started working on the lighting, and there were additional adjustments made during the kickstarter. Additional opponent types have also been shown, which are less cartoony than shown in some of the original screenshots.
