I loved Indiana Jones to death, but man did MachineGames add the most monotonous collectibles I've experienced in a long time 
It doesn't help that the map system is terrible if a collectible is underground. There's no indication as to what underground area you're supposed to be in, and when you are, you better hope it's the right one because the game will not tell you what underground area you're supposed to be in since each area has its own map.
About 34 hours sounds about right. I'm at 29 hours now and finishing up the last collectibles in Sukhotai, but at least half of that total playtime will be hunting down collectibles, and it just makes the game feel so much longer because of it. I definitely don't recommend being passive with the collectibles during your playthrough. Look up a collectible guide if you need to so you can get everything through a single playthrough lol.
You called down the thunder, now reap the whirlwind
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