Step 1
Standard start of campaign stuff, buy out godsbeard, abuse inn service
Step 2
Grind, there is literally nothing but scourges stopping you from grinding in frost adventure, and even those can be put off or ignored. Some tips I guess are stuff like abusing boats because there is no kraken and that very few enemies are actually considered ice so don’t overvalue those damage bonuses. This is just a really easy campaign all it takes is a bit of time.
Step 3
climb the mountain kill the boss and win.
Note: the majority off the enemies on the climb are undead, witches, or spirits so bring curse immunity