On top of the world

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Across
  1. 2. To help in some way
  2. 4. A person who climbs mountains
  3. 7. The one before
  4. 10. To make a choice
  5. 11. A tough situation
Down
  1. 1. An objective or target someone is trying to reach
  2. 3. Very, very cold
  3. 5. Complete something after hard work
  4. 6. To win
  5. 7. A form of visual art that can be hung on a wall
  6. 8. Mountain top
  7. 9. At the final point or moment