Peter had aworked really hard work for (can I use during instead?) severalfor several (/many) years. Peter worked really hard for several (/many) years.

He was a worker, but as it usually happenedwas often the case with the men coming from the villages, he was deassignated withed the worst and hardest jobs. He was a worker, but as was often the case with the men coming from the villages, he was assigned the worst and hardest jobs.

"The villages" implies there is a known place in the story with that description. You could also say "the countryside" if you mean just a general rural location,

The others usually called him "The *Hick*". The others usually called him "The *Hick*".

The *'s here make me read this more intensely, as if it were in bold letters.

He worked in a *ditch* handling heavy tools and among, in a continuous *blare*ur from *dawn to dusk*. He worked in a ditch handling heavy tools, in a continuous blur from dawn to dusk.

Despite everything, he got *away safe and sound* except for aside from a *wobbly* wrist. Despite everything, he got away safe and sound aside from a wobbly wrist.

I haven't ever heard "wobbly" used to describe a weakened/injured/damaged wrist, but I kind of like the imagery :)