use the arrow keys to move around you can wall jump and cling to the ceiling. If you touch a spike or lava then you respawn. If you touch a checkpoint you "activate" it and you will respawn there water is not that hard to spot ; special water physics are used when you touch water.
WIP pls don't comment "why is there no end" because I am still working on it If you advertise, please at least give a bit background information about your game rather than just commenting a link