Probably not possible, but I might have a look into that later.
Done some Taxing levels, and came up with some interesting results. Every record breaking the original one so far (And well done on Taxing 4).
1: 8 skills. Same as Fun 15
2: 4 skills. Done by digging down the left, increasing the rate, bashing the rock, getting some lemmings past the trap and two builders for the exit.
3: 6 builders
5: 9 skills. Very pleased with myself to get through this frustrating level. Reply attached
6: 1 basher timed correctly
7: 6 skills. Same as Tricky 4
8: 7 skills. 3 bashers, a precisely timed bomber to break the grid under the fourth ball, and three builders to the exit.
9: 1 digger
10: 7 skills. 4 builders to reach the edge of the third pit, a digger then 2 more builders to the exit.
11: 10 skills. 2 diggers and 8 builders
12: 7 skills.
Edit: I also did the first half of crazy. 1 and 3 is impossible to beat.
2: 1 digger down the left side
4: 3 builders
5: 5 builders
6: 1 climber, 1 digger and 3 builders over each gap
7: 2 skills. Climber and floater
8: 7 skills. Requires precision and thought in those builders and bashers.
9: 4 bashers. Upped the release rate to get someone past the trap.
10: 4 skills. 1 floater, builder, climber and basher
BTW, big slap to the face on Fun 29.
Didn't realise that the backwards miner would gain that much height for the plank to be climbable.