There are total
15 Focus Boosts in the Game. You can no miss a Focus Boosts, via Episodemenu you can replay finished Episodes.
If you collect a Focus Boosts it is
NOT automatically saved. You must play until the next Checkpoint and if you die between 2 Checkpoints, you must collect the latest Collectible again.
Push the Back Button in the Game and you see your overall Counter for each Collectible in the Statsmenu. A detailed Overview for each Episode find you in the Mainmenu at the Point "Load Episode". Here see you what you have / miss in each Episode.
The Videos below show all Collectibles in each Episode. I link here only the Focus Boosts.
When you Click a Item, a new Window open and the Video starts from this Time / Item.
Otherwise you can watch the Videos below and click manually to the Time or you watch directly on Youtube. In the YT Description there is the same Timeline too. Directly on Youtube dont open a new Window when you click a Timestamp. (Works only there)
All Video in Spoiler because without Spoiler the Solutions lags horrible.
Episode 01 - Low Life / Low TechNo Focus Boots here
Episode 02 - Macrowave03:08 - Focus Boost05:51 - Focus Boost
Episode 03 - High Tension / Deep Exit04:35 - Focus Boost08:43 - Focus Boost
Episode 04 - Panoptic Icon00:09 - Focus Boost05:00 - Focus Boost06:58 - Focus Boost08:01 - Focus Boost
Episode 05 - Headshot00:48 - Focus Boost02:21 - Focust Boost04:10 - Focust Boost
Episode 06 - Rotten Core00:40 - Focus Boost07:12 - Focust Boost
Episode 07 - Paradise Lost03:00 - Focus Boost08:49 - Focus Boost
Episode 08 - Sins of our FathersNo Focus Boots here