Hey, you had an Amstrad CPC, right, Balla? (oramithinkingofsomeoneelse) If so, you probably played a load of shitty flick-screen adventures. It's a better one of those. There are some Boy and His Blob style empty corridors going on, but if you like games where you hunt around for new places and things, then this is a good'n. A lot of people aren't keen on the platforming, but I actually feel that it's rewarding when you pull off a sparkle power -> ball attached to robot -> back to Mi -> wall grab combo. Which will probably make no sense, but...
In fact, I wouldn't describe it as a MetroidVania at all.