Talk:SAS: Zombie Assault 4 Skills/@comment-30104654-20161112212953/@comment-27141730-20161114012708

I think I understand

The skills that stack when added to themselves that I can think off the top of my head are:

Recovery Time - although it works in the opposite direction, where each point will subtract your revive time, but by a little lesser each by point

Revive and Bio Bomb