Only been able to do Stage 1 + 2 again. I didn’t even think I had 5 heroes for these classes to be honest so was surprised I do (2 of which I received from AR summons):
Triton (not levelled at all)
Sonya (not levelled at all)
I did have to use a few health potions at the beginning of stage 2 because it was giving me mostly reds and yellow tiles (I have: 2x blue, 2x purple and 1 green).
But I sailed through easily enough
Seriously can’t wait to do my first Stage 3 (and hopefully be able to beat it)