In the newest mobile version of Time Killer, you can choose the placement of the action buttons (as showed in the screenshot).

Another addition to the game is the new enemy.

The velociraptor with his 3 forms; 

The special thing about the velociraptor is that when he see you he will start running until he catches you up, but when he loses sight of you he will stop running and start walking. If he manages to get close to you, he will try a double  bite.

Anyway, with the introduction of the velociraptor now there are 9 enemies, each with its base, elite and final form (so you could say 27 total).