i know this is pretty new feature for construct2 but i just wanted to tell you that, i have tried my html5 game build on cocoonjs with 4 different phones but i couldnt make touch work on the devices.
i dont know if this is because of cocoonjs launcher or from C2, but if it is from c2 it should be a bug.
tested environments: android 2.2, 2.3, 4.0.3