MedicineStorm

Thanks for suggestions.

Currently there is no power-up in game. its plain old Ash just running with his guts and your support :)

Regarding 'increases the jump movement speed', sounds interesting. I will see how this will impact the game.

Regarding 'limit the number of "double jumps"'. In later levels, there are multiple obstacles which required player to keep Ash mid air for sometime to pass through those obstacles. if I were to limit it, it might have adverse affect. Still I will look into it.

Similar to this, I have one thought, in future I am planning to add power-up like dash, which will increase Ash speed horizontally for a moment and he will destory any obstacle during that period. And I can also introduce some obstacles which might take whole screen in a moment, so Ash will have to rely on this power up. This powerup will have limit. Such as power up cooldown and active time which might or not be increased using coins (coins not available in game currently). Its all in my head, when I will work on it, at that time I need to check its feasibility :D. 

Please keep proving more suggestions and feedback.