Hey! Thanks for the video review :)
Total agree with the grenades, are not well implemented (I'm affraid no are the only thing in this project), sorry for that :) About the control map layout, I'm using the standard/traditional FPS control map: AWSD for moving, C for crouching, Space for jumping, etc... Anyway, I'm glad you liked the game. Thanks for playing :)
P.D.: Mental note for next projects: Add the input map layout screen in game menu too, not only in the main menu ;P