What is the minimum number of skills needed to beat each level?

[namida]

A lot of these challenges, we've been doing all games in the same topic.

However, yeah, I see your point regarding clarifying they're L3D - good idea there.

[namida]

Lemmings 3D Mayhem, continued
Mayhem 68 -
Mayhem 69 - 5 skills
Mayhem 70 - 6 skills
Mayhem 71 - 5 skills
Mayhem 72 - 6 skills
Mayhem 73 - 17 skills
Mayhem 74 - 5 skills
Mayhem 75 -
Mayhem 76 - 18 skills
Mayhem 77 - 3 skills
Mayhem 78 -
Mayhem 79 - 7 skills
Mayhem 80 - 7 skills (replay attached)

EDITS
- Mayhem 73, 17 skills confirmed (RR 99 after the 10th lemming is out, take the 17-turner route except go through the 3rd trap instead of around it, saving 2 turners - enough lemmings will survive).
- Mayhem 76, 18 skills. The "skills you can't live without" suggests every skill is required on this one.

[LemSteven]

Tricky 25 - 4 skills? (This is based on that there's a save-76 solution, which "may" involve 3 bombers, and the fact that the level can't be solved without at least 1 turner.)

4 skills is correct (2 bombers and 2 turners)

Mayhem 67, I've confirmed two different paths for 6 skills (one via middle spring, one via first spring), but I'm working on a possible 5 skill solution. Best attempt so far saves 59 (and would save 60 but for a minor screwup near the end), but a lot of lemmings are lost to a different spring and I think there's room to avoid this with better RR manipulation (and that's saying something, as this solution already involves over 20 release rate changes).

5 skills is now confirmed.  Get ready to slap yourself in the head with this one:

L3D Level 67 - 5 Skills

Make the first lemming a right turner as soon as he lands, and let the second lemming drop off the block then make him a left turner.  Now build 2x over the water and assign a right turner to guide the crowd to the exit.  Several lemmings will be lost while the bridge is in progress, but enough will be saved to pass the level.

For L3D Fun 18, I'm going to suggest the obvious 16 skills as a starting point.  The max-saved solution uses a lot more.

L3D Fun 19: 5 skills, from the max-saved solution.

I'll take a look at a few of the other gaps over the course of the next few days.

[LemSteven]

Filling in the gaps from L3D:

L3D Level 35: 7 skills
L3D Level 50: 9 skills
L3D Level 68: 9 skills
L3D Level 75: 6 skills (the 1-basher solution)
L3D Level 78: 12 skills (a variation of the 7-builder solution)

Also, L3D Level 76 (Fun Fair) is down to 17 skills - the standard solution only requires 3 builders.

[namida]

Found a 10 skills solution to Crazy 8 while doing NeoLemmix Lemmings Redux min-skills; confirmed that this works on DOS too.

[Proxima]

I've checked that the Redux 2-skill solution to "Quest for Kieran" does not work on DOS, for a reason that I'll put in a spoiler since it might give away the solution in case anyone wants to look for it for themselves:

Spoiler

Redux has only 30 lemmings on this level. The original DOS level has 40.