Yeah, the beginning is great - up to the point where Indy starts to help out the Russians in the warehouse, at which point my brain starts going "What? Eh? What's he doing, what are they on about, whaaaat?".
And then it just gets worse from there.
Zero tension or believability, basically. Absolutely no emotional investment in any of the characters, Indy included. I couldn't care less if any of them died, at any point. And to make matters worse, some of the so called 'good guys' were so annoying, I was actively wanting the Russians to take baseball bats to their stupid grins. Again, that includes Indy himself.
The whole film felt like a giant smugfest. Indiana Jones & The Ooh Look, We've Done Another One!