Mammoth Rider

This game is a dynamic mammoth ride simulator. 

Aim of the game:
gaining score points by destroying moving targets, breaking walls and dodging obstacles. 
In this game the emphasis is placed on resalistic physical appearance and realistic mammoth riding. 
With new levels there're new upgrades (maximum speed growth, slow-mo effect and nitro acceleration), as well as growing levels of difficulty (faster targets, barricades). 

Control: 
grabbing the reins - grip button, 
going to the next level or restart the level - teleport button, 
slow-mo effect - left trigger button, 
nitro acceleration - right trigger button, 
whipping the mammoth - simultaneous rapid moving top-to-bottom in front of yourself, 
turning mammoth left - moving only the left controller to your left, 
turning mammoth right - moving only the right controller to your right, 
stopping the mammoth - moving both controllers simultaneously towards yourself. 

Points: 
person +1 (drawn in white), 
cow +2 (white), 
sheep/pig +5 (white), 
hen/duck +10 (white), 
unbroken wall +speed х 2 (in blue), 
bonus points are also given for hitting a spiky ball (in red) 

Questions: 
is the game interesting? What do you/ don't you like? What can be added/improved?