As a Spelunky nerd this game was pretty fun, even though I didn't make it very far across all my attempts.
I'm glad to see how the ABC rule also applies here :D (Always Be Carrying)
What confused me a little was that bombs need to be thrown once you light them, as the tutorial didn't mention the throwing aspect, but I guess it's partially my fault for not understanding that the timer is the bomb. (I ran into it multiple times on accident and had to restart the entire tutorial :D. Good job on making the tutorial short enough for it to not become annoying!)
Level Generation, Sound Design and almost everything else was pretty epic.
I like how you are encouraged to avoid combat.
I'm a bit sad that only few of the core mechanics of Spelunky were transferred to this game (I guess that time was a huge limiting factor), but the parts that were transferred were very well executed.
If you plan to expand this after the jam is over, I'll gladly check it out again. :D
(Please add tunnel man from spelunky classic as a playable character! 2 hp, 0 items and a mattock.)