Strider, a 2014 remake of the Capcom arcade classic, is a game I recently spent some time on, after buying it a while ago – and found it was actually very good.
This was very refreshing after some of the crap remakes of late – and good platformers on PC are few and far between.
Anyhoo – there is a fantastic post from a user called Sainiku on the steam forums at
https://steamcommunity.com/app/235210/discussions/0/558749190662765094/
which has a map of each level and all the collectibles. The issue I found with it, was that I found myself wasting a lot of time trying to get to certain areas, and couldn’t work out how to open one trapdoor.
The thumb-nailed maps below have a little more detail on how to get to around.