I managed to quite easily pull off some sort of combo where on the first turn I could eat food that boosted power, that generated card draw, that allowed me to infinite loop an upgraded 0 cost attack that was doing hundreds of damage, so finished the battle first turn.
Felt good tho :)
Anyhows, that attack card that increases each time any other attack is increased, with it's cost reduced to 0, giving me food when it kills, along with the aoe 2 cost (and i had the 1 cost one also) that increases attack whenever you eat food, I also had the do 1 damage 3 times if it kills you get food up to 50+damage 5 times, had a couple of enrages, so it was topping 150+ x5 pretty quickly... All in all I felt like I had 4 different combos going, any of which was OP. Oh yeah, fly kick. that made sure I could get it all kickstarted easily.
Also assuming I finished it... I got a mushroom key, wandered up some cool dark path towards a purple light, then it just ended. Was kind of abrupt.