What do you do if you can't do your job?

Question

Career in IT

Such a situation: at work I was assigned to work on a new project for me. The project is huge, there is little documentation on it, or rather almost none, but there is code in which the devil will break his leg. When you try to ask something, to help deal with another problem, someone will come up, stumble, say "hmm, well xs, that's crap, try like this" and leave. You do it, but this "like this" does not work. And so in a circle.
I feel that I can’t cope, before that there were projects of varying complexity and everything was normal - I sat, figured it out and felt progress, but here it’s completely different, somehow they immediately threw it from relatively simple to too complex a thing. How to proceed? Thoughts are:
1) just leave. Finding a job is easier, gradually progressing to this level of projects.
2) sit and wait until the last, maybe they won’t trample you.
3) ask for an easier job. But this option seems wild to me ...
Do not offer to sit down and figure it out. I really tried, two weeks. And then it only gets worse, I understand that this is not my level.

Answer 1

Actually develop a plan on how to understand this project, write documentation on it yourself.
If the company is shit, this is a great chance to do everything the way you want.

Answer 2

нанять на fl прогеров для начала, как поймешь уже сам дальше