Last Survivor!

This is an adventure of the world loneliest man! Being alone in a strange place. The whole planet was occupied by slimes and monsters! The lonely scientist is the last Survivor. He is now in grave peril!
Gathering everything had left, the one and only choice is fight to survive! Pick up everythings as weapons and battle the myterious and dangerous enemies!
One against all, awake your extreme form of power and find the way to survive!