Jack troubles

This is a first person shooter game,The player is a shooter with multiple weapons,Players are free to explore the surrounding area,Enemies are scattered around the player and inside buildings,Players can kill enemies or avoid enemy attacks and maintain health,Players can also grab enemy weapons.
Control keys:
Right-click targeting
WASD movement
The left Shift running
Left mouse button attack
Space leaping
The left Ctrl squats
Mouse control direction
R Loaded Weapons
G the bomb
Middle mouse button switch weapons