The K2 is a story that is gated by budget. It was simply ahead of its time. As a result, the action scenes and cuts suffered greatly. However, these can still be enjoyed in a comedic sense. In general, it was quite solid and enjoyable though.

Good Parts
The acting was quite solid from all the cast, minus some moments such as the mum throwing tantrums. Perhaps they didnt fully know what direction they were going with in the story when making that scene. Most of the side characters were fairly memorable. Not their names but like their general role in the story/world. I only know the main characters names, Anna and Kay Teu.

Music was lowkey kinda peak, with the lyrics being like actually plot heavy and epic. The ost and soundtrack fit really well in general. Some of them being really memorable and hype as well. Theres a song that sounds like they are just chanting Ah Shit. Ah Ah Ah Shit. Ah Ah. which is peak.

K2 had a suspenseful story that was really fun to follow. Although some parts were relatively predictable, there were definitely moments where my expectations were subverted. Very well written. All the budget went into this clearly.
Cuz the action scenes were abit shit

Problems
K2 has a lot of shots/quick cuts and disorienting moments. Sometimes I could get a little dizzy from watching some of those scenes. I imagine that in a perfect world, these cuts wouldnt exist. I really hope that it wasnt some really experienced editor or something like that cuz mfs should really not be editing shows like this in 2016.

Some scenes, there'd be like person A doing something, and then the next scene when we return to it, they'd be doing something else entirely, which is a bit weird once you notice it. And they definitely did it a lot. Probably just cut out a bunch of content from the final edits.

I dont think I could rewatch the entire show, maybe like 60% of it. A good chunk of it might give me a headache from the poor editing and the last few episodes may be kinda tilting to rewatch.

Overall, the ending was pretty fitting. Although some parts felt a bit contrived, it was still pretty solid and much better than I expected it to be. Some parts made alot of sense, some parts didnt, but cant have em all. Majority of the scenes acheive what they set out to do. Some action scenes dont really make sense or some moments in general are abit silly and kinda frustrating. But the show is still enjoyable and I reckon at least a 7.5 if not an 8. Quite enjoyable.

Really enjoyed the subway add right at the end for their happy ending.