A challenging mod which improves upon the base game's difficulty in a creative and exhilarating way

The mod is exceptional at what it does - providing a challenge in the form of bosses.

The 8 bosses it adds are all high quality, far better than the base game, and give incentive for exploration, gearing up, combat and learning their moves. There is no laziness with this mod, everything is executed in detail, with well thought out movesets which work in minecraft. The fantastic OST composed for each of them is just the cherry on top.

The rewards you get are also worth the hassle, and are an incentive to fight the bosses again - due to the variety of crafting recipes. The sheer amount of content makes the mod worth it.

A few downsides persist - spawn rates of a few mobs are too high and may hamper performance (Especially in open oceans), and some structures are (while breathtaking builds in their own right) simply jarring in the landscape. None of this detracts from the quality of what the mod intends to add, though, and it is definitely one of, if not the best, combat/mob mods available.