Alchemical enhancement have increased the power of saints under his father after his defeat the saints were pardoned and currently occupy high positions in austrian and french ministry with a dozen people in british ministry and even in international confederation of wizards have them so they only have over fifty combatants along with some of decendents they number up to hundred each of there Combat power exide 40 after enhancement
After gaining alligence of saints He completed first mission and gained five hundred thousand points with it he plan on purchasing a demi plane although he can purchase dimensional gate to some weak worlds but world power isn't enough and this function is locked
After purchasing a demi plane and binding it in himself he still have some points left so he purchased all year textbook from hogwarts and a lot of books on black magic and using points he mastered it all
Afterwards he started learning occupancy and ligilamency along with wandless casting of all type of spells
He even purchased discounted pack of three unforgivable curses and now he can really kill people with a look
His demi plane is situated in scottish Highland which is not far from hogwarts but you can only go and come if authorised by him so he created a mark similar to dark mark with his authority allowing people to come and go freely
He also replaced grindelwald with an old man he found on the roadside along with transforming him with alchemy to look like him he was also trained to act like him only people like dumbledore can tell the difference
Now middle aged grindelwald is residing in a mage tower as after being confined he seem to like the tower the most and power of mage tower is very powerful