Use every battery you see. If can't use it - just toggle night vision for a moment.

Use every bottle and brick you see (damage enemies, headshot'em when possible), keep 1 or 2 bricks/bottles for the end of the trial and use it to get to the shuttle safely.

Always keep 1 (better 2, if you have upgraded your inventory up to 4 slots) bricks or bottles. If you have upgraded a perk, that allows you to use brick/bottle to skip Hider jumpscare - you can avoid being damaged.

Use every adrenaline shot you found, cuz they're pretty much useless - there are no places in any map where you can't just jump into the dark and sneak or silent-jump away from the enemy.

Use rig every time it recharges, if you found rig recharger - use the rig and recharge it.

Bash blocked doors/barricades.

Avoid any traps, damage, sanity loss.

Disarm traps!

Defuse door traps and use batteries from it.
Use any batteries that you sure won't be need/used by your teammates, for example, batteries that are far from everyone.
You can do a "stash" with batteries in somewhere, your teammates will take it if they need, and you could use all the batteries from this "stash" closer to the end of the trial.

Use every bottle and brick you see (damage enemies, headshot'em when possible), keep 1 or 2 bricks/bottles for the end of the trial and use it to get to the shuttle safely with your team.

Always keep 1 (better 2, if you have upgraded your inventory up to 4 slots) bricks or bottles. If you have upgraded a perk, that allows you to use brick/bottle to skip Hider jumpscare - you can avoid being damaged or you can just help your friends with these.

Help your teammates, revive them, do cooperative actions.

Use your rig when it possible, if you found rig recharger - find yourself an opportunity to use it (heal ur teammates; stun enemies; x-ray).

On lower difficulties - use every adrenaline shot you find.
On higher difficulties - share it with your teammates if you're skilled enough/don't need it.

Bash blocked doors and barricades.

Avoid any traps, damage, sanity loss.

Disarm traps!

• How much time you are at trial.
  
• How many extra posters you've collected (more than mission requires).
  
• How many times you've been detected by enemies.
  
• How many times you've been jumpscared by "hider" (it will only count damage, if you took it).

HWT - How many times
HW - How many/much

• HWT you did take damage (less = better)
  
• HWT you lost your sanity, even only 1/3 (less = better)
  
• HWT you triggered sound traps, gas traps, door traps, electric traps, sleeping guys (less = better)

• HW psychosises did you survive (more = better, but you need to lower your sanity somehow, which will lower you ranking)
  
• HW antidotes you used (more = better, but you need to lower your sanity somehow, which will lower you ranking)
  
• HW heal bottles you used (more = better, but you need to lower your health somehow, which will lower you ranking)

• HWT you used your rig (more = better)
  
• HWT you used batteries (more = better)
  
• HWT you used rig recharger (more = better)
  
• HWT you used bricks/bottles to distract enemies (more = better)
  
• HWT you hit enemies with bricks/bottles (more = better)|
  
• HWT you headshoted enemies with bricks/bottles (more = better)
  
• HWT you helped someone with cooperative action (more = better)
  
• HWT did you hide (more = better)
  
• HWT you revived your friends (more = better)
  
• HWT you helped your knocked friends (more = better)
  
• HWT you saved your friends from attacks/traps (more = better)
  
• HW blocked doors/barricades did you bash (more = better)
  
• HWT did you use adrenaline shot (more = better)
  
• HW documents did you collect (more = better)
  
• HWT you saved your friends from execution (more = better)
  
• HW syringes you used (more = better)
  
• HW locked containers you've opened with lockpicks (more = better)
  
• HW locked containers you've opened with master key (more = better)
  
• HW traps you disarmed (more = better)

List above will be updated with time.
Any action that is not red in final ranking screen does affect your ranking, and affects it with more=better rule.

This update have changed ranking system a little bit, but as i've noticed it's not a big difference from what we had before.
Everything is pretty much the same.

My thoughts from what i've seen in patch notes and from in-game experience:
- it's now impossible/VERY hard to get A+ if one of your teammates died and u finished the trial without reviving him.
- Developers don't want players to rush or speedrun trials (leaving their teammates behind), so they've made some changes in ranking system to penalty speedrun players in multiplayer (but, honestly, i don't know what they've changed except highering penalty for escaping without reviving teammates. RESEARCH IN PROGRESS!)
- CO-OP Actions now affect the rank more.

I won't update sheets right now, because these are almost theories at the moment, and i want to get more information about new changes before updating the guide fully.

That's everything i've noticed for now, i'll update guide if i find something.

Big thanks to everyone,
Stay hyped for updates!

I will update this guide with time.
Good luck!