in a 15min game deathmatch on DM-Antalus. At what level should I be able to beat the bots to be considered "decent"?

I just played a 5min match on "experienced" and won 3:0

reason I am asking is I signed up at ggl.com and already got my first challenge
so I just want to know how to "train" ... I know that remembering the map is a key ...

and never stop moving and the way to fire diff weapons and etc. ...

I am not very experienced at ut2k4 dynamics ... more of a CS/DOD type person ...