thanks for the feedback! the game is a little easy to run through with more time I would have changed that but I generally try to air on the side of easy when it comes to difficulty in jams, at least for early levels/sections in games.
the jackpot is triggered by rolling so spamming it makes that more likely to happen and the lower rolls create bigger higher damage projectiles, however I agree as well that rolling into walls to at least reload when you can is a strong plan.