Destiny Bow

You need to protect the tomb of your good friend Bob Lightfoot. But all non-magical weapons are useless so you got a bow with the name of Destiny bow which uses magical enchanted arrows to hit enemies. To create a magical arrow you need to press demanded keys, when this happens the bow activates and you can normaly shot into the enemy. Of course with every wave the enemies will become stronger and stronger. Their main task is to kill one last  guardian of the tomb. 

WASD to move
Left click mouse to shoot
RFCTGVZHBUJNIKM you need to type the letter
Esc to pause