noclip works only if cheats are enabled. To enable cheats, you must start a map with devmap command instead of map command.
English is easy to learn. Programming languages are hard to learn.
Wildwest beach is similar to mp_beach. I would recommend to look into file mp_beach.gm to find some inspiration.
Engineer try to plant a dynamite on the nearest waypoint. If the nearest waypoint is behind the wall, they cannot get to it and fail. You should move the waypoints near the beach wall.
You must create a CAPPOINT goal at the mine cart where the gold has to be delivered.
Why there is usepath property at the waypoints near the mine cart ? You should never use usepath, it is obsolete. If you remove it, then bots can go downstairs to the gold.