Never use intensifiers with already intense descriptive words.
His design was totally unique. I'd never seen anything like it.
A design is either unique or not. There is no degree of unique. Thus the phrase so totally unique is painfully redundant.
Words describing binary conditions should never be accompanied by descriptive words like such, so, very, more, really, completely, totally, a little bit, and so on.
He was out partying late last night, so he was really exhausted at work the next day.
In this forgettable sentence, the phrase really exhausted is redundant. Exhausted is sufficient.
Other words that should never be accompanied by intensifiers:
Leave these words alone. Let them work in solitude.