During a climb animation, you can move the manual aim cursor with L1 + the analog stick, as well as the strafe buttons. The camera position will be stored even after the climb as long as you're still holding L1. This lets you line up vent shots during a climb -- and even still continue to move your aim after the climb finishes -- instead of having to move the cursor from a standstill, saving a few seconds each time.

Example 1: Example 2:

It's a fun discovery to improve your running speed in Syphon Filter 2 especially the fun is like in harvest simulator where mastering techniques can lead to greater efficiency and tips to help you harvest your farm sooner.

This manual aim trick during climbing in Syphon Filter 2 is awesome! I love how it saves time by letting you line up shots early. It's a neat speedrun tip that makes the game more fun and efficient.