The hammers were stuck for me too - what helped was trying to force their state change by e.g. attacking them to the edge so they start falling from the platform, and in one case charge-jumping above them (they maybe switched sides then which refreshed some state change). It's a pity there's only trial level, would play more :) The visuals and audio were very nice. The label "Press c to charge" could explain more, I fell down there few times (maybe I'm just stupid, but "Press c to charge mid-air and space again for multi-jump" or something like that which would be more idiot-proof would work for me better). I liked the game still :)