I had a ton of fun playing.
The most broken strat seems to be getting 2 remove dice rewards within the first 5 levels so that you only have one of each kind of dice (or two defense if you want). You can hit “done” without removing all 3. Then focus on leveling up the dice you have. This will ensure you get the same strong dice every turn, allowing you to steamroll until round 16-ish. If you have to get an extra die, try to get a mirror die or another defense die. Mirror + a gold defense die every turn is broken. You don’t even need to use heavy dice, but they help in the late game. I’ve found that a second healing die is sometimes a hinderance because it takes up a slot on the loadout and rarely gets used.