Summit board game expansions review! Yeti and Teams

About Summit: The Board Game – Yeti expansion, from BoardGameGeek:

As if "Summit The Board Game" wasn't deadly enough, the Yeti expansion brings a new level of excitement and distress to your expedition as you, your friends and your rivals are stalked across the frozen landscape by an unrelenting foe. The Yeti expansion can be used with the base game in any mode of play, competitive, cooperative or solo. Contains: - 2 new dual-layer player mats, (Asymmetrical stats & abilities) - 16 new cards (2 Items, 7 Events & 7 Karma) - A marker cube - A custom Yeti Pawn - Rulesheet