Have you listened to the guards’ conversations near the lake? There’s an item you can get from the truck using the crowbar that will distract them. It’s also shiny and bright. It looks like something that was studied secretly at another lake by the name of Groom…
The door code solved 😎 I believe I’stuck because of a bug now though. I used Trophy near the statue inside the house. A strange pop-up appeared on the right-down, it looked like an ID card or something. Then I opened inventory and saw Trophy (held), used it again and it just disappeared from the inventory along with the pop-up 🥲 After that the inventory doesn’t let pick up the second item, as there are two items in it. Like I can’t carry two ID cards anymore, for example. Then I tried to get the Trophy again, and I could take it as the second item. But then I dropped Wetsuit and can’t take the second item again having only Trophy...
Update: It’s definitely a bug. I took the Trophy again and did the same thing. It happened again and now my inventory is empty (except Radio) and I can’t pick up anything :( Restoring from a save point doesn’t help - the inventory stays the same. Had to restart the game from the very beginning…