pretty good, really fun specially once you build a momentum... I did feel like the controls were a bit awkward, that would probably because of the prerequisite of "mouse input only"
an idea for an improvement if ur interested, would be to remove the jump entirely and just rely on the tongue to grapple and pull you around... using a tongue on a wall would pull you in... and as for those grapple points... tapping the mouse pulls you, while holding does your regular swing.