I was thinking eventually of “fading” actions into each other,
but I guess you can just have a ‘animation list’ and remove the animation after X frames… ?
Nice work marco 
guys i really have to thank you for your solutions
i came up with another solution:
when a key is pressed the armature tracks to a certain empty pointing in a direction and plays the walk animation
for example: when i press “W” the armature tracks to the “front_empty” and plays the walk animation
when i press “A” the armature tracks to the “left_empty” and plays the same walk animation
i tried this once but it didnt work that time
now it works dont ask me why xD