If you’ve started playing Indiana Jones and the Great Circle on Xbox or PC, you might be a few hours into exploring the Vatican City. And that’s cool, but I’m here to convince you to leave that place and go explore the other locations.

Before you jump the gun in Indiana Jones and the Great Circle, you'll want to focus on finding the Adventure Books in the Vatican to improve Indy's Survival, Fitness, and Brawling capabilities, among others.

Ancient Relics are items you’ll discover while exploring the Vatican in Indiana Jones and the Great Circle. There are 10 of them to find as part of the Vatican’s iteration of the repeatedly occurring “Riddles of the Ancients” discovery.

Ten Inscriptions need to be photographed as part of the Secret of the Giants quest in Indiana Jones and the Great Circle. Here's where to find them.

Track down the rest of the inscriptions to learn more about the history of giants who worked alongside the Vatican.

Indiana Jones and the Great Circle's first area packs enough content that'd leave me satisfied if it was the whole game

There are three clues you need to solve the “A Date to Remember” mystery and find the lock’s combination. Look on the desk for the Secret Delivery Letter and the Calendar Page. Check the drawer on the left of the desk to find the Code Lookup Table.

In this Indiana Jones walkthrough, we are focusing on just the main storyline. We are playing on the hardest difficulty (Very Hard) and mostly trying to stealth our way through situations. We head to Vatican City and complete the entirety of The Stolen Cat Mummy after first making our way through Castel Sant'Angelo.

You'll need the guard house key in Indiana Jones when you find this door on your way to the Vatican. It'll say it 'Requires: Guard House Key' when you try to open it and, fortunately, it's not far away - if you just keep going past this door you'll see this little room on the left, just as that 'Bastione San Giovanni' message pops: