Hello Stefano, I have come across some bugs.
In the poison area there is a section near the end where there are two pick ups. The ammo pickup wouldn't register for me and I nearly died having to run through two plants and the vine things that protect the exit.
At the cave part you cannot aim your weapon? I have died twice at this part and had to restart from the beginning because of this. I was recording at the time but cant really show me pressing the aim button as at the moment I do not have a cam. I am not sure if this is the correct way of bug report, but wanted to post and let you know.
Up to now those are the only two bugs I've come across, I hope this helps :)