Answer:
ACROSS
2. wood
5. wilderness
7. mom
12. divorce
13. plane
14. perpich
16. secret
18. survival pack
19. moose
20.
DOWN
1. fire
3. pilot
4. red berries
6. spear
8. hatchet
9. lake
10. brian
11. food
15. hunger
17. dad
the ones i left blank are the ones i don't know