Nice game!
The idea actually seems very good, makes it a bit of a tower defence with deckbuilder elements. Though as of right now it is a bit confusing and unintuitive. It would be nice to know from where will the climbers come from, as right now for example it's hard to make good use of the first turn. Personally I am a bit annoyed that passing by does not trigger traps :d because it's really hard to judge where the climbers will end up, especially without knowing their stats, but obviously not everything can be done in 48h. Overall a great and engaging entry, congrats on making it! It's pretty impressive considering the time constraints.