I just did 450 bosses and spectated, but I don't know how to get the dread nips reward. It seems in the listed rewards, that I need 25 more kills to get 500 dread nips. I still haven't gotten the dread nips from the original goal, 450 bosses and a spectate a match. How do I get these, without going through another 25 bosses?
This is what I found on runescape wikia article on dreadnips:
It is recommended to spectate a match before obtaining the 450th kill. As doing so will bug the interface preventing the dreadnips from being obtained. A fix to this is fighting one more boss after the spectate.