Super Grotto reminds me tough Amstrad CPC game, it is tough, very tough and unforgiving. Nice design of the levels and visuals.
A few things that could be improved IMHO:
-add sound level config, music became boring even annoying quickly (is it made on purpose ? :) )
-console could be accessed using a key, automatically is, again, annoying.
-character cannot use ladder on a jump, maybe it is because of his suit. It's became common to be able to do that in platform games, what do you think about adding this feature ?
Keep up the good work !