Yep, Ankh has got only 15.
Managed to get through within 2 days effective

@Mart: I spoke about level 5 of notpron; There is no need to hear the sound in Ankh, but if you like to you will have to dl the ogg (vorbis?) codec.

Btw. Level 6 of Ankh is a really nice one. The solution lies within the source again, but you have to .... visualize
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