I've seen several of the "loose rock" type of hidden switches in the game-- you know, the little divot in the corner of one of the cinderblocks that serves as a switch. Early on, I used to scour every block looking for a tiny little graphical hint of a more subtle switch. I soon stopped that as 1) I never found anything and 2) it looked like all of the switches were of the "loose rock" variety.
My question: are there any other hidden switches beyond the tried-and-true loose rock? Can I save my eyes from straining, or worrying that I missed some new hidden switch, and just keep my eyes open for "loose rocks"?
Thanks for any insight.
