I'm too lazy to count, but I guess I have to. Positive terrain and both damage criteria I fulfill. In my notes on my previous run, it seems I did not have problems at all ... so I am a bit lost. I tried it now 7 times or so. There are only so few ways to get EXP at this stage of the game. I'm already thinking of restarting the game to get the bonus items of the previous stages to make it a bit easier ... maybe I am some turns too slow.
This is driving me nuts!