S rank is the max rank for completing any misson.

Rank is an indicator of how well you have completed the mission. It requires the player to complete all the main and secondary objectives of the mission. If you fail any of the objectives, you will lose points and your final rank will decrease. To see your rank, after completing or failing a mission, your rank will be displayed. S is the max rank, F is the min rank.
All the ranks are:
F - Terrible
E - Very bad
D - Bad
C - Medium
B - Good
A - Very good
S - Perfect

When you complete the mission at a high rank, you get various achievements and cosmetics (helmets, vests, etc.). Usually, to get any cosmetics, you need to complete the mission at rank B or higher.

The following sections will go into detail on how to get it.

It's pretty simple and typical - you need to arrest and secure all civilians in the area.

This is tricky - you need to arrest and secure all suspects WITHOUT KILLING THEM. How to do this will be explained in the "Equipment Selection" section.

I'm not entirely sure about this section, but it makes sense. Try to ensure the complete survival of all personnel. If this happens, don't forget to report the loss of an officer to TOC.

Place each piece of evidence (firearms, storage boxes, etc.) in the bag. Also report all finds and evidence. However, this can be difficult - sometimes the weapon can fall under the map. Hope that this does not happen, because it does not depend on you.

To accurately complete the mission for S rank, you need good equipment. Here's what you need:

Primary Weapon

If you want to complete a mission for S rank, do not choose a lethal weapon as your primary weapon under any circumstances. Forget about the pistol, as there is no non-lethal pistol in the game at the moment. To arrest and secure all suspects without killing them, use non-lethal weapons with "orange inserts". Also give it to your entire team. Here are their names:
- Assault rifle: VPL-25
- Submachine gun: TPL
- Shotgun: Traumatic shotgun (TAC-700)
Be careful though, if you shoot at them for too long it could result in the suspect's death.

Long tactical gear

If you are playing a single player game, do not give your teammates a riot shield. Because in case of storming the premises, the officer with the shield will use it together with the secondary weapon (pistol), and as I wrote above, at the moment there is no non-lethal pistol in the game. You can safely use other long tactical gear, but I recommend to be careful with the breaching shotgun and M320 grenade launchers. Personally, I recommend getting a mirror gun.

Additional tactical equipment

I strongly recommend using grenades (flashbang, gas, etc.). If you have a particular preference for one type of grenade, then select the appropirate equipment for each officer. If you use CS grenades, give each officer a gas mask. And if flashbang, then glasses to protect against bright flashes.

As for other equipment, I recommend using a taser and/or pepper spray, as they can also stun and force suspects to surrender. However, when using non-lethal weapons, they are mostly useless. I strongly recommend against using C2, as it can harm suspects. A Lock-Picker Gun can also be used if desired.

Thank you for reading my guide. If you think that I missed something, feel free to write about it in the comments section under my guide! Good luck in completing the mission!