The jungle level was tough, but it only took me about 1 hour to figure it out.
Dunno if I could do it solo though.  Still using backups, though I don't lose a single one now.
I must say, I love the new levels, but I would have liked to see more of them in the new release.  I get the feeling Redstorm is on the last legs with the Rainbow6 line.
AKDejaVu