You must beat all of the tym tower for revenant sub zero.
try this out:
1.plant feet on ground firmly
2.put thumb horizontal across the middle of all 4 buttons
3.tilt controller so the right is lower than the left (allows faster tapping)
4.dont start blazing fast you will lose speed
5. Go moderate speed until you reach the max it can go at that rate
6.start tapping like a mad man
7. Once you see it blinking red and green for a split second hit the smash button. From that point it will be 50/50 of fail or success.
8.remember once it blinks hit smash...I swear I have broken the symbol 3 times when the last color I saw was red thinking that I failed

I broke the titanium 6 times hoping for some new skin...