Board Thread:Shadow Fight 2 Discussion/@comment-24329676-20141230093931/@comment-24329676-20150111031931

To get boss weapons, you need to enter eclipse mode. That allows you to replay old chapters. You must replay the bodyguards and the boss of that has the weapon you want.

I found it hard to get to Cronos too but the solution is to rematch with Lynx and beat him to win his claws. They are powerful because the enchantment (time bomb) deals a consistent amount of damage. So it only took about seven hits to beat the looters since the time bomb finished them off for me.