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Gameplay was tested for 2 to 2 1/2 hours. Normal gameplay was unaffected, but had a very low fps rate at low graphic settings.
What does not
The introductory video, one of my favorite parts of the whole game, is broken. Along with that, the sound is impossible to listen to, so I muted it. The sound skips, buzzes, and doesn't quite play all the way.
What was not tested
I did not get that far into the game, did not test different characters (besides the default character).
The game installs and runs just fine, but the sound issues and random slow downs to boot makes it annoying and becomes unbearable to continue playing for a while. If you really want to play, it is definitely playable, but there is a loss by not being able to hear or even depict what is coming out of your speakers.