Addition to Gameplay

I need that extra element to my game to really differentiate it from the other games of its kind out there. At the moment its pretty much obstacle avoidance and thats the end. To shake things up I've been thinking of giving Franklin a special ability once reaching level 2. As he progresses through the game, he gets stronger as he is cleansing the negative energy within and weakening the inner monster who has control over him. With this addition of strength, it makes sense that he is capable of doing something more to help him win the fight. So what I propose is that as he gets stronger (from level 2 up), he obtains a new ability that may be used in game play.

Ideas:

1) Franklin can go "ghost" and pass through obstacles without dying.

2) Franklin can put up a shield which repels obstacles preventing him from dying and the player returning to the start of the level.

3) Pacman styles. Special power which makes obstacles vulnerable for a brief period. In this state when Franklin hits them, they die instead of him.

4) Special Power - Obstacle Reset.

Perfect for a sticky situation. Franklin can reset obstacles so their positions are re-mapped in the level allowing him to proceed without death. Could be a gamble though if the obstacles were to re-spawn in front of Franklin's path, he would still die. Could be the name of the power? "The Gamble"? :P

Limited use:

Level 2 - Once/Twice? Level 3 - Twice/Three times?

Options for use:

- Only lasts as long as a key is pressed.

- Lasts as long as a set time.