Commando is nether good or bad. The plot makes no sense, there is minimal acting and the action scenes are over the top or plain retarded. However it still has a strange charm over it. It's like the movie never tries on purpose, this making us forgive it. I think a lot of people accidentally believe it was supposed to be serious, not understanding the comedy.
Looking past the flaws, it is actually pretty fun to watch. Arnold's one liners hit the spot every time and the over the top scenes puts a grin on your face. It's not a masterpiece by any means and I doubt I'll watch it again anytime soon, but some parts really entertained me. 6/10