Quite possibly one of the most challenging and unique puzzle games I've seen. It's a shame that it probably has such a low score due to people get frustrated with.
For those who read A Man53's comment about the keys, *spoilers* the zombies from the second wave CAN drop the second key, and it's still possible to reach Gope in Goznor during then.
yeah... note to anyone else thinking the same thing: don't save before trying the 4th enchantment on a weapon, failing, then refreshing the page because that's how I somehow lost my awesome scimitar... *sob*