Fewest different skills levels can be beaten with

[Clam]

Mayhem 12, 22 and 28 are all possible with 100% using bashers and builders. 12 takes a bit of steel bashing, the other two are glitch-free.

[namida]

Tricky 21, from the skills you can't live without topic, I solved it using Builders+Bashers and Builders+Miners. Both solutions can easily be adapted to get 100%.

Due to the large number of skills, I'm fairly sure that Bombers+Builders (non-100%, obviously) and Builders+Diggers (100%) are possible too.

[nobody]

Tricky 20 can be 100%'d with Builders + Bashers + Miners + Diggers.

[Clam]

This is possible without the miners. (still 100%)

[Minim]

Tricky 14 works with Blockers, builders and bashers at the moment, athough think it works without blockers.

[nobody]

This is possible without the miners. (still 100%)

D'oh, you're completely right!  http://www.lemmingsforums.com/Smileys/lemmings/embarrassed.gif" alt=":-[" title="Embarrassed" class="smiley" />

[Proxima]

Let's get some more Taxing levels out of the way.

Taxing 4: builders, bashers, miners (100%)
Taxing 5: builders, bashers, diggers (100%)
Taxing 6: bashers, diggers (100%) -- obviously I'm not able to verify this for myself but it's fairly well-known that such a solution exists in the DOS version
Taxing 7 I won't answer since http://www.lemmingsforums.com/index.php?topic=170.75" class="bbc_link" target="_blank">there exist solutions that don't use all five skills, but that post doesn't state whether it's possible to do without the climber and blocker.
Taxing 8 is obvious: builders, bashers (100%)
Taxing 11: builders, diggers (100%)
Taxing 12: builders, bashers, diggers (100%)
Taxing 13: climbers, blockers, builders, bashers, miners
Taxing 14: builders, bashers, diggers (100%)

[Proxima]

Taxing 16 has been beaten with 100%, and since there's nothing you can release a blocker with, this must use just floaters and builders.
I haven't actually achieved this, but it's fairly obvious that Taxing 17 can be done with just builders and bashers.

[nobody]

Continuing on with the Taxing levels, 21 can be completed (100%, obviously) with climbers, builders and miners. I was trying to get a builder-basher-miner solution using the wall jumping glitch but I didn't have enough builders to make it work.

[Proxima]

From here, I think we can finish off Taxing. Haven't verified 28 and 29, but I'll do so tomorrow unless someone else gets in first.

25 - builders, bashers (100%)
27 - blockers, builders
28 - floaters, bombers, builders, bashers [EDIT: and blockers]
29 - climbers, builders, miners, diggers (100%)

That finishes the Original Lemmings levels. No level required more than five types of skill!

[nobody]

The diggers aren't necessary for Taxing 29, it can still be completed 100% with just climbers, builders and miners.

[Clam]

Whoa, no need to rush through this. You're just going to miss stuff that way. Like:

Taxing 4: builders + miners (100%)
5: builders + bashers (100%)
7: okay, you didn't "miss" this as such, but it is possible without the climber and the blocker. (glitch solution since it involves bashing steel)
13: This is possible without the climber by bashing under the last one-way wall and stopping them with builders to make "steps".
14: Builders + bashers (100%).
29: nobody just posted a 3-skill solution, but it's also possible with blockers, builders and bashers (not 100% though. EDIT: And it requires a glitch)

[Proxima]

http://www.lemmingsforums.com/Smileys/lemmings/tongue.gif" alt=":P" title="Tongue" class="smiley" /> You know as well as I do I wouldn't have seen those, "rushing" as you call it or not.

Anyway, I don't have the patience to verify the "normal" Taxing 17 builders/bashers solution, but I did manage to get 100% via the hidden exit. Something of a voyage of discovery, as I'd never actually reached the hidden exit before (though of course I knew it was there). The level's title turned out to be less than entirely truthful....

[Proxima]

Taxing 28 verified with *five* skills. I had to use a blocker as well to prevent too many lemmings dying during the long bash. Clam Spammer, over to you on this one, I think....

[Clam]

Well, I thought you might have found Taxing 4 and 5 at least. They're not glitch solutions or anything.

Anyway, I just found another improvement to the above: Taxing 12, 100% with builders and miners.