That's putting it mildly. They have taken one of, if not the most hated things in Videogames and taken it to the extreme: backtracking.
My pet peeve is that they took the longest and most tedious route and put it as the first option in a system of branching paths. Tedious because it's the only one with a collection requirement, basically you have to explore the rest of the level before pursuing this path.
The collectible item (fuse) is also so small and unnoticeable in this unnecessarily large level that you've probably already walked past some of them more than once.
The fucking backtracking... I completed Mission 4 in 1 hour and 30 minutes. More than an hour of that time was me [Shift]+[W]ing through some boring cave with headache-inducing camera shake (yeah wtf is up with that?)
The first time I got the bottom of the elevator pit I just told myself "I'm gonna try each path one by one see what's there"... surprise dead end that requires you to come again later.
The second time I rushed back down there and accidentally got myself surrounded by too many enemies in a corner and died.
The third I respawned and after redoing the other 2 light puzzles I went down to the bottom to the elevator again only to realize I only have 2 fuses and there's a 3rd that I need to find in an unnecessarily gigantic fucking level. Luckily I had a feeling it was probably towards the beginning of the mission so I only had to check every corner of the elevator backtrack path until I got to it.
The fourth time I finally have all 3 fuses and activate the elevator. I think this was a massive "fuck you" in terms of game design. Too lazy to implement the ability for player to take the elevator too, let them waste their time backtracking the single longest route of the entire level.
Also, as much as they want to paint it as a RE game with porn mechanics, most of the audience will play this because it's a porn game with RE elements. If the developers don't take this into account when sorting out their priorities, financial support for this game will just dwindle.
EDIT: Also don't know if my game files are corrupted, but the obstacles blocking the light rays are invisible until I damage them.