2nd phase sonar is a bit confusing.
Viewing post in Between Shapes - An Egosnooter Experience comments
thanks for the Feedback :) I know it's most likely to a lack of explanation by the game. I'll try to improve on that in future versions. The gist of the second phases is usually just "adjustment" to the new form which means doing things that resamble that. Bat has to find things via Sonar, Wolf via Sniffing and Kangaroo has to learn how to use it's legs. ^^