Across 
1. How close you come to the target.
4. Make final.
7. Roll around in.
8. On purpose.
9. Make a slave.
10. Normal-ness.
11. Make stronger.
15. Show-offy.
18. Significance.
23. A letter is one kind.
24. Useless.
25. Chaos.
27. Enthusiasm.
28. Reachable.
29. Having knowledge.
30. Subtractable.
Down 
1. In agreement.
2. Party.
3. Opposite of aggression.
4. Making it up.
5. The goal.
6. Make popular.
12. It slows you dowm.
13. Make interested.
14. Without stopping.
16. Picture.
17. Babyhood.
19. Organize.
20. Say you're sorry.
21. Bad warning.
22. Dissatisfied.
26. Take away some of.