I played for a while, but I couldn't figure out how to progress any further, so here's what little feedback I have to offer for now:
- The camera feels pretty weird, any time I turn it it has to re-center itself on the character for some reason.
- The arrow trap seemed pretty punishing but it seems sometimes (and only sometimes) you can hug the wall to avoid them.
- I wish I could switch the levers outside of first person mode too.
- Exiting FPMode can be done at any time by pressing RMB, but you need to stand still to be able to enter it.
- By the end of my session, I couldn't use my weapon anymore with LMB in third person mode.
I'm not going to talk about things needing to be communicated better to the player, as it seems clear at this point in development a tutorial isn't in place yet, but maybe you should mention holding LMB to interact in the game's page!