I'm playing on classic mode, and for me it feels substantially harder than the original's equivalent mode. For me there seems to be a bit of a skills gap between explorer and classic: explorer doesn't really encourage me to try out different tactics and to advance my characters thoughtfully, but classic is hard enough that at times I'm not really enjoying the game as much as I did. Part of it is the removal or undermining of certain skills, like leech, arrow-spray, jump and so on, but also the thing with dice-rolls (God, I hate dice-rolls at the best of times) which now seem to be really biased against me: it seems that archers only manage to hit their target around a third of the time, unless they're frozen or knocked over. Occasional misses I can understand, but when it's most of the time, it stops being fun. Er, anyway, I digress.