Hi
tribunals will basically compensate you for losses.
Mrs Tj used to do this stuff. First step go online and find redundancy payment calculator – so thats the amount you would have got if made redundant.
Add to that your losses – which are the wages from sacking until tribunal that you would have got minus the benefits you have had plus any expenses you have incurred.
Then for future earnings you need to make a case. How difficult will it to get anew job? try for a years wages, settle for 3 months. You have to argue that this is reasonable
If the threats and stuff have made it harder to get a job due to your mental state this gives you ammunition to argue for a longer time to get a new job thus more money.
Be calm and methodical, lay out how much you would have got in each category. Have facts a figures to hand
Hope that helps