i killed the gre anomaly downtown twice and the bounty is not complete

[zealous drift]

i used regular weapons like the pk crossbow and ax of orion and i killed it on hard mode and still nothing
its the last bounty i need for the bonus please help

[scenic tendon]

Try to kill few more time for me it worked on my 5th attempt for few it got completed in 4th attempt. Seems it is some kind of bug
you can check title : Downtown King