Boss Fighters QR play (review copy provided)

About Boss Fighters QR, from BoardGameGeek:

Dive into daring battles with 2 to 4 heroes as you face off against ten unique and intelligent boss monsters! What makes it special: All bosses are controlled by an app that dynamically responds to your actions. At the start of each battle, their tactics and abilities remain a mystery. Uncover their weaknesses, discover how to defeat them, and claim powerful loot cards to upgrade your deck and unlock new abilities! Boss Fighters QR is a cooperative fantasy campaign game where players battle against ten unique boss monsters that react tactically to their actions. This hybrid game combines elements of a classic card game with a digital app to create an interplay of strategic deck building and dynamic boss battles. The Scan&Play mechanic of Boss Fighters QR allows the game to instantly recognize player cards as they are scanned, which then triggers challenging responses – to the players' choices, in real time. At the start of the campaign, each player chooses a hero deck-Jungle Troll, Hill Halfling, Copper Dwarf or Wood Elf-and combines it with one of the four available classes: Warrior, Mage, Rogue or Druid. Every boss has its own unique tactics and abilities, strengths and weaknesses, which the group of heroes must first deduce and understand before they can effectively fight it. Upon successfully defeating a boss, players gain loot cards hidden in three secret loot boxes, which they can use to improve their decks and unlock new, powerful abilities. Each boss battle can be attempted at one of four levels of difficulty. -description from the publisher