Yes, the Bar and Law society say you must have those subjects at at least 40% in order to practise, whereas your uni could give you what's called a 'Pass' degree if you failed them. Realistically though you'll need a lot more than a pass in any module you do to have a shot at practising.
You get used to it after awhile and the weirder ones are more memorable, I still remember Internationale Handelsgesellschaft from second year

The more annoying I found were criminal if it's a common name, as there's often more than one.
Realise this wasn't at me but I found Crim, Tort and Land particularly enjoyable. I probably want to be a litigator, not sure exactly though.
It is hard to find a training contract, but I wouldn't say the returns are disporportionate unless you do criminal defence work, most lawyers, particularly commercial ones, will make a lot of money compared to the average person their age, particularly beyond about 30.
Know it's not at me again but I'm on the LPC, graduated last year from a RG.
I think there's an element of truth to what your client said with regard to any contentious work (be that civil, family, employment or criminal), you will have to accept you're a hired gun and you will have to tread close to the edge of what the rules allow in order to get your client the best result possible. Obviously you can refuse to act, but this is largely a discretion of the person running the case and in early years that won't be you, and non contentious stuff (property, corporate, finance etc.) doesn't have much of that element.