Last Man Standing p3 Fixes and stripper cleanup

Stage 1Ex: Adjusted Vortigaunt
Stage 2: Adjusted Tank to v6 location
Stage 2: Fixed Water skip on last part
Stage 2: Portal is now more predictable
Stage 2: Fix early triggering vent (big problem)
Stage 3: Added filtername to nuke immunizer
Stage 4: Applied proper ending for stage 4 nuke break as it was supposed to in Hannibals notes.
Stage 4: Heli wont now go into skybox (porter issue)
Stage 5: Added anti delay
Stage 5: The Truck has now blockdmg to discourage blocking it
Stage 5: Fixes some boost due to freezer and minigun + core hit push making zms fly up
Stage 5 OPTIONAL: Make zms reset speed to fix an exploit for zms where they would get more speed than the last man in blue ending

ZM Items: Antlion Nerfed to 0.55 instead of 1.15 for Digging underground attack

Optional: Added song lyrics for Stage 3 Bossfight, Stage 4 Ending and Stage 5 Start & Core Defense