Happy to see a quick fix and the willingness, gave it another go - but have no idea what to do, I found one of the batteries at the start, but the Crowbar on the box can't be grabbed yet I assume it's meant to be taken? I presumed I needed to get the crowbar to break something to get a board to cross the Upstairs 'bridge'/plank that is transparent.
So, other suggestions, otherwise I'm just not sure if its just incompletable at its state. There's that 'Pitfall' next to the crowbar you can't grab that looks important, unsure if at some point you're ever meant to cross it or not but maybe add lighting to inform a player that there's a giant pit of death there?
The 'things I notice when playing' Item/interaction wise is, Flashlight that needs 2 batteries, a Crowbar I can't pick up, an Electrical box that makes noise but can't be fixed or interacted with? A plank that needs to be found but none that I can find, a bunch of dead-ends via walls or gates and the One battery near the starting room. Otherwise, from that point on I feel as if no one can actually make progress in the game. I'd argue if I get stuck, or don't know how to get anywhere, then many other players will be in the same boat.
Also, I tried hiding in the locker on the 'upstairs locker' to wait for the guy to walk by towards the Non-existing-plank-bridge, but he got stuck in a weird way in his pathfinding while in the locker and he never resumed his patrol of going left back down the stairs, he just seemed to get stuck while I was in the locker, annoyingly. He bugs out if you're in that locker and he walks by? No idea. Otherwise, his pathfinding at the start probably makes it problematic for most players since if we HAVE to go up those long-winded stairs, its a linear path with no place to hide, if the start is X and the upstairs area we need to 'surpass' is point Z. Then we have to literally wait at Z or X for him to slowly go All the way up, then all the way back down to the start before we can run up - or vice versa, if we're upstairs, we have to wait for him to finish patrolling downstairs then make his way up - walk towards the incomplete-bridge/plank area before we rush downstairs - or else we risk bumping into him, then dying because we can't outrun him, he doesn't get tired, he runs as fast as you but we have limited stamina. It's either a Lot of waiting or a chase you can't win/escape from. Many things from this logic need to be fixed and balanced, but especially if you're going to have such a long-winded stairway thats a One-path thing, to add different rooms of importance inbetween the 'upstairs' and the starting-level, both so you can hide in any of those levels inbetween from his patrols, and to make X to Z not be so distant between 'presumed progress points'. Otherwise with those suggestions in mind, I still presume the game is broken or bugged in a way that doesn't allow progress, because in my mind, 'I need the crowbar to go forward, but I can't pick it up'. I can't imagine I missed anything else that's needed for progress unless there's some plank hidden in the darkness I simply walked past somehow.