Spoilers!!!

The possible names that the program will recognize are: Tommy, Conrad, Margo, Chris, Hazel, Brad, and Adam.

A note about difficulty grading:
A route's difficulty level is graded on a scale. In the US we use the YDS (Yosemite Decimal System), and grades look like this 5.12b. The 5 defines the class of movemtent. Class one movement is walking on a flat, level, artificial surface like flooring. Class 5 movement is vertical surface. All grades start with the 5. After the decimal you have numbers from 0 to (at present) 15, 0 being the easiest and 15 being the most difficult. Each ascending difference is greater in difficulty than the last; for example the difference in difficult between 5.9 and 5.10 is much greater than the difference between 5.7 and 5.8. Because of this at 5.10 and above there are subdivisions in the rating. In order of easiest to most difficult the subdivisions go:
5.10-, 5.10a, 5.10b, 5.10, 5.10c, 5.10d, 5.10+
The same relationship of each increase in difficulty being larger than the previous increase applies to the subdivisions as well. The same subdivisions are currently sufficient for 5.11, 5.12, 5.13, 5.14, and 5.15. The hardest possible climbs in the world are currently 5.15d and I am aware of 2. Only one person who has ever lived has finished a 5.15d, Adam Ondra. Most people who are able to climb 5.13 are sponsored or professional climbers.

Route: A route is basically like a vertical pathway, high enough that one would most likely use a rope to prevent a ground fall. In otherwords, a route is the thing you climb with a rope.

Types of climbing: There are three types of climbing mentioned in the game, though others exist as well. Below are descriptions of each. If you're interested in a more visual, more effective explanation, please click here.

Bouldering: a category of climbing in which one climbs short, usually quite challenging problems close to the ground. It unsurprisingly most often occurs on acutal boulders.

Lead climbing: when I climber ascends above their protection, trailing the rope behind them and clipping it to protection(which is either installed in the rockm, or carried and placed in the rock by the leader).

Sport climbing: sport routes are predefined by a vertical pathway of bolts which have been drilled into the rock. The lead climber clips a carabiner to the bolt, and then clips the rope to the carabiner.

Trad climbing: (or traditional climbing) is much, much trickier than sport climbing. The leader places protection (cams, nuts, etc) into weaknesses in the rock as the climb, clipping to the protecion behind them. It requires much study and is as much art as it is science. It also require much more strength and endurance to rummage through a wad of gear clipped to your harness, find the right piece, and place it well enough to catch you if you fall; all while holding on with one hand. Typically there is a two-grade reduction between sport and trad: meaning if you can lead 5.10's sport climbing, you can probably trad lead 5.8's. Send (or sending): When you succesfully complete a route.

Redpoint (or redpointing): Succesefully finishing a route without weighting the rope, by either falling or resting by hanging from the rope, but it's either not your first attempt or someone has explained how to finish that route to you.

Flash: Successfully finishing a route without weighting the rope, cleanly on your first try, with no advice from outside sources.

Free climbing: When you don't climb aid pieces. You are protected by a rope, but you're using only the rock itself to move upwards.

Free-soloing: When you don't use protection at all. Soloists spend huge amounts of time rehearsing a route with protection. Then when they're ready, the clean the route very carefully before climbing it without ropes.