Treasure

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Across
  1. 4. Blowing something up with air
  2. 5. Has another go
  3. 7. Not even, as in numbers
  4. 8. Level one returns to after doing drugs, say
  5. 9. Type of canoe
Down
  1. 1. Navy leader, of the whole fleet
  2. 2. Not first or second
  3. 3. To do very well (like a masked hero perhaps?)
  4. 6. Earlier