If you won TI5...

Invest and cheat my way through the stock and shares market to an ez billionaire status.

Then take over the country, establish dictatorship, solve world terror by giving the terrorists 2 days to completely surrender before bombing their country to a nuclear wasteland.

If the UN objects, point out that I got results.

Ignore the summons to the Hague. Send back the messenger in five pieces.

Build a palace large enough to house my ego (this may be difficult...). Fill said palace with the following:
-Courtyard and walls, easily defensible but fill it with incompetent minions. Make sure this is the only entrance, preferably through a large visible portal with a skull on top of it.
-Main hall. Servant's quarters to the left, kitchen to the side. Servant's quarters has a chamberlain in a black suit and a vampire cosplay. The head cook will be a dull-witted but exceptionally strong giant.
-Have the next floor as an art gallery. A laser-shooting robot is the curator. This art gallery has three staircases leading to the third floor, one of which is blocked off.
-One staircase leads to the ambassador's quarters.
-One leads to my harem filled with concubines.
-The third is sealed off until the other two wings have been cleared. This third staircase leads to my personal chambers, where they have to fight through wave after wave of mooks, seven people representing the aspects of the Seven Sins, then more mooks, and finally confronting me in my astral observatory.
-Name the palace 'THISISANRPGDUNGEONGATHERAGROUPOF25FRIENDSANDCOMERAIDIT'.
-Appear in the next tier, saying 'I know what you're thinking, but the palace was merely a setback!'

Kreygasm.