7 More Hidden Video Game Enemies You Weren't Supposed To See

While the Arachnoid is indeed an enemy that will pop up frequently in Serious Sam 3, there awaits a truly terrifying variant of the beast that will only be found within very specific copies of the game.

What makes this version of the Arachnoid so intensely unsettling is the fact that it is completely immune to your attacks, moves quicker than a whippet with a bum full of dynamite, and will cut through the player like they were made of paper.

Now, normally this is the type of enemy that Serious Sam diehards would love to face because, if we're being honest, the player base is made up of at least 90% sadists, however, these true fans would actually never end up facing the beast due to the fact that their support of the franchise likely means they bought an official copy of the game.

That's right, the Invincible Arachnoid is an enemy that only appears in cracked or illegal copies of Serious Sam 3, and will hunt any pirates it finds down with relentless aggression. Buy or die definitely seems to be the message sent by the devs here.