Definitely an interesting take where the probability lies in the deaths of the enemies, although i feel that giving the enemies different behaviours in their different numbered states would add more fun. Overall, the cards are also an amazing addition!
The concept of a rogue-like dungeon where probability determines damager is a great idea. The map could have a simple end objective like a key/door, and the spawns of the spiders could be random for more effect.
I love monkeys. The concept is cool as to how you incorporated the bananas with the probability barrel. However, the movement system feels too fluid and sometimes like you are flying. The researchers die way too fast without any satisfaction. But I like bananas. +1 for music too