Nick turned out to be right in his assumption, all the other three remaining environment tests turned out to be even more of a breeze than the first two.
The stage following the canyon was that of a low lighting, low ceiling, narrow corridor cave.
In this level his sprint practically slowed to a jog, as if he had one misstep he'd scrape any part of his body on the tight, narrow space surrounding him.
This stage was rather boring, as that was the only unique facet of it. It didn't have any falling obstacles like the canyon level did, or natural environmental obstacles like the jungle level did.
However the fourth test following on from the cave turned out to be a little bit more of a challenge. It was a river crossing and swamp stage, where as he walked through the door separating level 3 and 4, the simulation opened up to rushing shallows and muddy banks all around.