3 times rebirth <30min with boss lvl 37 beat?

[6xLord]

What is the "secret" thing I'm supposed to get for rebirthing <30 minutes with boss 37 beat for three times?
It's alluded to in the rebirth section of the how to play pages, but nothing happens if I do it. is it a bug or am I overlooking something?

[Fel]

There is an ingame achievement (not a steam one) that gives you a small reward if you do that.

[6xLord]

thanks!
really wasn't worth ruining my NUMBER then XD

[Fel]

Usually you end up doing it without noticing anyway, during challenges for example.

Not that number is all that important beyong unlocking adventure zones anyway.

[jshepler]

It gives +200 exp and +1 base energy power. If you do it early enough, it's a little useful. Plus, completing the in-game achievements increases AP multiplier, so that's always a good thing.

Typically done during a challenge, in which NUMBER is reset to 0 anyway. Not that it matters, NUMBER builds back up quickly enough.