OK, so after dying a huge amounts of times, I'm beginning to get a grip on the slidiness of the player character, have bought myself a double jump and Vampirism for more health from enemies - it's still incredibly hard, and I haven't even dared to go near boss rooms. Hopefully after I've amassed enough gold from my runs, I'll be able to buy some better gear - still have to find it in the castle though. It's a decent little game this, but by Belial it's hard.