SkillsSkills 2 "Maybe Not JUST Walk..." - A reference to Mild 1 of Lemmings Plus I, "Just Walk!" (which is in turn a reference to Fun 1 of Orig, "Just Dig!")
Skills 7 "Troubled Bridge Over Water" - A reference to Bridge Over Troubled Water
Skills 9 "Four and Twenty Lemmings" - A reference to 4:20, which (if you know what that means) ties into the name of the skill in this level

Skills 11 "Don't Hurry, Be Happy" - A play on "Don't worry, be happy"
Skills 12 "Lemmings On A Platform" - A somewhat subtle reference to Snakes on a Plane
Skills 16 "Always Give 110%" - If using the absolute (not cloner-adjusted) percentages, which was the only option when this level was originally developed, the save requirement would show as 110%
Skills 18 "With Lem, From Me" - A play on "With love, from me"
Skills 19 "Tree Time" - A play on "Tea Time", or "Free Time". Whichever you prefer.
ObjectsObjects 16 "The Big Bad Block" - A reference to The Big Bad Wolf
GimmicksGimmicks 2 "The Ascending Lemming Scenario" - A reference to Taxing 11 of Orig, "The Ascending Pillar Scenario", which this level also resembles somewhat
Gimmicks 3 "Floater Frenzy Mini" - A reference to the Floater Frenzy levels (Lemmings Plus II's equivalent to We All Fall Down)
Gimmicks 4 "'Til Life Do Us Part" - A play on "Til death do us part"
Gimmicks 12 "In The Tree, Part Of The Tree" - An Adventure Time reference; specifically the episode "Up a Tree" from Season 5
Gimmicks 13 "Hellbiter" - A reference to a certain spoilery boss's attack from Final Fantasy X, which inflicts the Zombie status on characters