What is the highest level you got on robokill (the free version)?

i got up to level 16 then for some reason i can't level up now. I think this is because the creators dont want you getting all the weapons!

I was actually able to level up and get the pulse gun without purchasing. You can't rely on trying to rampage through the first couple of levels to try and level up ;-)

how? no matter how hard i tried i couldnt get past 16

i cant go to episode 2?!?! with out buying it

I have a registred version and I am stuck in level 34. It does not matter if you re-play all missions; it is not increasing.