Witchfinder General said:
Will I need a guide to play this?
Also, can your character level up?
Sure, he levels up all over the place!
It's just that his experience is only temporary for that run (i.e. until he dies or leaves the tower)
What is often lost when folk hear the "Death = loss of all experience and items", is that this is a very streamlined quick moving game, not that it is all arcadey, but that the tower levels don't take that long to traverse, your character levels very quickly, and that a successful dungeon run might only take an hour or so.
Not only does your character level quickly, there are no skills or attribute points to play around with as you level. I can only assume there is some little graphic or sound effect to indicate they you have leveled but it doesn't break up the gameplay, just something cute in the background. Each level you gain gives you more hit points and allows you to deal more damage. This is also not to say your experience level is irrelevant, if you tried to dive too deep without properly leveling you'll be dog food, but just that it isn't that, "everything stops for a few minutes as I read over the skills I could put points into or think about which of my stats I should build at this point". Not only does the character not have any innate skills (all cool powers come from your items), but that none of the items will have any of the standard, "you need this strength or experience level to use this item". If you find it you can use it. I think they balance all of this by having your experience level figure in heavily in attack and defense (so it isn't just based on the items themselves) and maybe having the more powerful magic items with very limited uses, extra rare, or maybe only found much deeper in the tower (it's a tower but you are going down, like some dungeon...I don't get it myself).