Silent Hill 3 HD

Recommendations:
Try to unlock Extra Options as soon as possible to get the maximum ammo multiplier.
To do this, you need to die about 10-12 times and select Continue.

Do your first playthrough on Easy difficulty.
Remember where to go, where everything is and where the monsters live.
During the first run, you can collect all the minor and story trophies, as well as kill about 140 monsters.
At the end you will get the "Normal" ending.
After the first passage, you will open the Infinite Machine , Laser Sword and Flamethrower (see tips on how to quickly obtain them in one run), with which the passage on Normal will seem easier.

Do the second playthrough on Normal difficulty, get the silver and gold pipes , and use infinite weapons to kill as many monsters as possible (there are about 215 of them on this difficulty) - this is necessary to get the “Possessed” ending and unlock the Heather Beam ( kill a total of 333 monsters).

Start your third playthrough on the Beginner difficulty level (which can be enabled via ExtraOptions).
Kill monsters ONLY with the Heather Beam.
Do not use a weapon under any circumstances and do not finish off lying enemies with your feet.
In Heather's apartment you will get the "UFO" ending, along the way you can take all the remaining trophies - Makes My Head Hurt , Adrenaline Junkie and Ninja (if you haven't already taken them).

In total, in 2.5 playthroughs you will get platinum.