As a member of the 666th Helldivers Regiment, and SESF by association, you are expected to conduct yourself as follows: 

We take the operations that make elite helldivers quiver in their skin-sacks. Play what makes you comfortable, but remember to challenge yourself to take on the worst that our enemies have to offer. This means HELLDIVE and higher as more difficulties get released.

You are the tip of the spear of Super Earth. You are the first to drop, and the last to evac. Remember this always.

You are only as strong as the divers by your side. Be kind to your fellow divers, work together with your fellow divers, look out for your fellow divers. Always welcome a full squad - your fellow divers are your family.

It is suggested that you complete objectives as 2-person fireteams to optimize the death and destruction that you deliver to our enemies, though you are welcome to play the way you enjoy the most.

Remember that full mission clearance is conducive to peak operational efficiency. Spill oil, squash bugs, and most importantly...

 "tolle eas ad inferos..." Take them to hell.