ok, i see how youve done your damage system now.. and heres my attempt, there are loads of glitches but hey, try it out anyway...
press i to get the inventory up/down but it doesnt work.
right click next to/ above or below a block to place another block
left click on a block to destroy it... slowly...
wasd to move the character (a little white box)
there is a minimap at the top right corner of the screen, has 1 glitch that ive seen..
save/load works for blocks but not the player, it jumps positions when you load it for some odd reason... stays on screen though

also you can pick up the debree left from destroying the blocks, just doesnt add to the inventory yet.
enjoy

savvy
PS: if you find anything useful, +1 would be nice.