Thread:NoWayThisUsernameIsAlreadyOwnedBySomeone/@comment-24335865-20150429013604/@comment-26143371-20150429182430

Gas Mask/Music Note rewards are constant and won't change.

For the crafting currencies I can calculate the following:

Level 0 - 1: 4

Level 2 - 4: 6.25 → 7 (from what you recieved, the game seems to round up)

Level 5 - 7: 9

Level 8 - 10: 12.25 → 13

Level 11 - 12: 16

Level 13 - 14: 20.25 → 21

Level 15 - 16: 25

Not sure at which level you are currently, but it would be nice if you could confirm the level 8 reward!