Fight against zombies with over 34 different unique guns for the highest score with an accurate ballistics engine or go to the range and test them all and try training exercises.
You were kidnapped by terrorists and brought to a castle far away from the civilization. They force you to construct a nuclear bomb for their next big attack so it's your job to escape the castle.
Make a jump in time and clear the sky from all alien things! Catch all the golden wheels and avoid the perilous fiery globes without falling down then you will succeed!