Fourth biome still a joke compared to the third (at least with 0.5 enemy density), beat it literally every time I hit it without difficulty. Third biome without star or reflect? Misery.
If I had found a digseed or gardener, there is no question I would have beat the game this time. Hit 3 coloured pads, just didn't have anything to deal with two following snakes near the top. If I had found the bomb, I probably would have also beat the game, albeit with more difficulty.