Yeah it’s worth it. Don’t expect a world class game - I’d put it into the same category as FEAR 3 (I refuse to use it’s stylised name), TimeShift, Black, and Perfect Dark Zero. Competent shooters, but utterly unremarkable - a decent way to waste a few hours and nothing more.
The Daikatana itself is a nice addition to the game, and can be powered up 2thaMAX (literally) by around ep3, and it makes you feel like an utter badass if you’ve spent the time to level it up
Just remember to bring a coffee and a snack for the opening cutscene. It almost makes Oppenheimer look like a trailer. It’s unnecessarily loooooong.