Cursed Blizzards is the fourth stage in Body and Soul.
The stage makes you face an Elder Sloth at the start. After a while, a normal Sloth will spawn. Oh, and be aware: if you don't defeat the stage within 200 seconds, you will be faced with a flood of Elder Sloths(20), essentially guaranteeing that you lose the level.
You can bring cheap units with good DPS. Examples include Dancing Flasher, Crazed Whale, and Jamiera. Chill Cat can also be used to great effect. Spam them until the Elder Sloth dies. As soon as he dies, use Awakened Bahamut after the normal sloth attacks. Be warned: the normal Sloth 1-shots Bahamut. The ideal situation is to have A. Bahamut and fast units attacking the Sloth at the same time. If you time it correctly, the Sloth should be knocked back and attack during ABahamut's backswing, keeping him alive.
You can also cheese this stage with Jamiera for its ability. Use it to knock it back the sloth to the base and spawn in A Bahamut to finish the base. This requires good timing and luck.
Another option is to kill the massive horde of Elder Sloths using long-ranged, anti-Alien Ubers (such as Megaphrodite), and tanky units (such as Metal Cat or Frosty Kai). If you can stall for long enough, using meatshields, tanky units, or what have you, you can eventually kill all the Elder Sloths and win the stage via brute force.
In 3 star mode, getting enough damage on the Sloth can be difficult without Maglev. However, one can use Sniper, Cat Cannon, and the Sloth's damage knockbacks to glitch a few Manic Lions through it to cheese to base.
Lufalan Pasalan can also make this stage much easier. He outranges the sloths, and can deal enormous damage (Even more if critical).