what the fk was his mission?

Well, he killed the bad guys and told the hostages they could leave...ha

that police officer just couldn't let things be XD

I think he was supposed to locate them.

Police officers are SUPPOSED to let people steal? News to me.

you don't get what i meant (〜￣△￣)〜
he was trying to let them all go as he took the money but that officer stopped him and made it so they couldn't leave again

If you're being held hostage, let the hostages go and you can then report the theft or follow the guy. But the officer's FIRST duty was to see the hostages set free. Bad cop.

Exactly what if he shot the hostages to get the money ? She should have got the gun and told him to take the money snd go

police's duty is both protect civilians(assuming its not a shitworld country)
AND APPREHEND THE CRIMINALS!!
As a Police it is their duty to protect civilians from present and potential criminals

Yes, it is. But when it's a choice between one or the other, you save hostages FIRST... safety of hostages is a priority.

In this case, btw, she was pointing a gun at their rescuer, not their hostage-taker, so she was DOUBLY wrong.

he was unarmed and she saw the opportunity to apprehend him, savior or not, justice must be served you know.
She didn't know she was up against some ancient piece of trash who took another piece of trash

Maybe you aren't in the US, but our law enforcement prioritizes the safety of the hostages.

He was "UNARMED" AND THERE IS A GUN OVER THERE!
she thought she has the higher ground and can arrest him and find out about the kidnapper.
Its adrenaline and shit, she never thought of a possibility that she may have been fighting an ancient kung fu master

And how could she be sure there were not other villains around or that he didn't have another gun? She hadn't frisked him. She hadn't explored outside.

he fought the other guy unarmed despite having guns.
He had his back behind behind her, and the gun a few cm away, showing huge opportunity for the police.
Take down, frisk 'em, take the criminals phone or something and hold out, all adrenaline talking.

And if he had decided to retaliate by killing the guy she sent to tie him up (she sent a civilian to do a cop job, again, bad police work)? She'd be responsible for a hostage death.