[@Teoinsanity]
The Butler Bots, as 'extras', don't need a CS. But you may build one if you wish to.

You could make the Tetris intelligent. State that it needs to host a fully sentient AI in order to be able to maneauver the metaphysical roads between space and time.

Your character is fairly powerful altogether, but you could state that the Crash Hammer is capable of harming energy beings. This would increase your capability to fight off things such as Ghosts and Elementals.