See 'em at Gamersyde.
Props to BlimBlim (one of the owners of Gamersyde) and TTP (the player and recorder of the videos) from neogaf.
Edit:
Also, PSU has posted the trophies for Killzone 2:
http://www.psu.com/%5BUPDATE%5D-All-Killzone-2-trophies-revealed-News--a0005509-p0.php
The list is not 100% correct, as it is a somewhat old list, but it's very imformative. For example, the game has ten chapters. Of course, quite a few of the trophies are hidden trophies, and are thus quite spoilerific.
Some of the more interesting ones (read at your own peril):
Elementalslayer - Kill the Tharsis Refinery ArcTrooper in under 1 minute
Giantslayer - Kill the Blood Meridian heavy in unter 1 minute
Dragonslayer - Kill the Salamun Bridge ATAC in under 1 minute 30 seconds
Demonslayee - Kill Radec at Visari Palace within 20 minutes
Stick Around - Nail 20 Helghast to a wall using the Boltgun VC-21
Can Opener - Destroy any Helghast APC during battle
Spare Parts - Destroy all Leech Pods in The Cruiser
Treadhead - Take 30 Helghast lives whilst using the ISA tank
Mechspert - Stomp 10 Helghast with your Exoskeleton in Maelstra Barrens
