for anyone who still need to refer to 4pb guide.
The roots and muck tower builds
DNEF
Towers available:
Duals: magic,corpse explosion,gunpowder,flame,blacksmith,mushroom
Triples: voodoo,flamethrower,roots,quaker
A reasonable build to complete. Roots and flame will provide the slows. Voodoo and blacksmith the support. Main damage would be quaker. Magic and mushroom can be worked into the build. The only tower not worth building here is disease.
DNEL
Towers available:
Duals: corpse explosion,gunpowder,trickery,mushroom,life,quark
Triples: roots,oblivion,laser,enchantment
This build is slightly harder to complete with no strong aoe damage triple. Roots is the only slow. Enchantment the only support (outside of trickery). Gunpowder, mushroom and maybe laser are the stronger damage towers. Oblivion can be a source of damage if you can micro well. Quark is less effective in VH due to the micro needed. Also, you'll probably be busy building to handle the teleporting of quark well. Life towers could see some use here to provide a buffer in terms of lives.
DWEF
Towers available:
Duals: poison,gunpowder,magic,hydro,vapour,blacksmith
Triples: muck,corrosion,flamethrower,zealot
One of the easier builds to complete outside of the 2 double aoe slow builds. Muck for the slow, corrosion, blacksmith for the support. Zealot is one of the strongest towers in this build. Kindle is used to clear the early waves. Hydro as a secondary 'slow'. Poison is discarded here as there are much better towers in the build.
DWEL
Towers available:
Duals: poison,gunpowder,trickery,hydro,ice,quark
Triples: muck,hail,laser,polar
Slightly harder to complete. Muck and ice provides the slows. This build has less in support with only polar available. Gunpowder, hydro, hail and laser should all feature for this build.
DNEW
Towers available:
Duals: corpse explosion,gunpowder,poison,mushroom,well,hydro
Triples: roots,drowning,muck,flesh golem
One of the easiest builds to complete. Roots and muck provides the slows. The damage would come from gunpowder, mushroom and hydro. Well provides strong support for all damage towers. Flesh golem/drowning could see play but i haven't tested the build before.
The nova and windstorm builds
LFNE
Towers available:
Duals: electricity,life,quark,flame,blacksmith,mushroom
Triples: nova,gold,enchantment,quaker
A reasonable but slightly more challenging build to complete. There's nova and flame for slow, enchantment and blacksmith for support. Quaker, electricity and mushroom for damage. It feels like there is enough damage but i did have some problems completing the build (not sure about others).
LFND
Towers available:
Duals: electricity,life,trickery,flame,magic,corpse explosion
Triples: nova,radius,oblivion,voodoo
A more challenging build to complete. Nova and flame for slow, voodoo for support. This build lacks a strong damage triple. Electricity and magic would be the damage for this build. Again, oblivion can be used if you can micro.
LWFE
Towers available:
Duals: ice,electricity,quark,vapour,hydro,blacksmith
Triples: windstorm,polar,gold,zealot
A decent build to complete. Windstorm and ice for the slows, polar and blacksmith for the support. Zealot is a strong triple for this build. Kindle for the early waves, which can be upgraded to zealot after the early game. Hydro can be used as a damage and supporting 'slow' tower.
LWFD
Towers available:
Duals: ice,electricity,trickery,vapour,poison,magic
Triples: windstorm,hail,radius,corrosion
One of the easier builds outside of the double aoe slow builds. Windstorm and ice for slow, corrosion for support. Kindle for early waves, to be upgraded to corrosion. Electricity, magic and hail can be used for damage.
LFNW
Towers available:
Duals: electricity,life,ice,flame,vapour,well
Triples: nova,windstorm,tidal,impulse
One of the 2 easiest builds to complete. Nova, windstorm and ice for slow. Tidal, impulse, electricity for damage. Well for support.
Non aoe-slow Builds
LDFE
Towers available:
Duals: trickery,electricity,quark,magic,gunpowder,blacksmith
Triples: radius,laser,gold,flamethrower
One of the hardest builds to complete. No slows and strong support towers outside of blacksmith. I haven't managed to complete this build so far...
LDWN
Towers available:
Duals: trickery,ice,life,poison,corpse explosion,well
Triples: hail,oblivion,tidal,drowning
This build is challenging. I managed to do it but just barely with spamming of tidals and well towers at VII, V and I. Ice is the only slow available. Hail would see play here. Someone could test a drowning tower build here...
LWNE
Towers available:
Duals: ice,life,quark,well,hydro,mushroom
Triples: tidal,polar,enchantment,flesh golem
Rather challenging build, although easier than the above one. Again, spamming of tidals and wells, with help from enchantment, mushroom, hydro and ice
DWFN
Towers available:
Duals: poison,magic,corpse explosion,vapour,well,flame
Triples: corrosion,drowning,voodoo,impulse
One of the easier build of this set but still challenging to complete. Corrosion, voodoo, flame, well for support. Impulse, magic (upgrades to voodoo), kindle (upgrades to corrosion) as damage. The build lacks a strong aoe damage triple though so make the best of single-target towers.
WFNE
Towers available:
Duals: vapour,well,hydro,flame,blacksmith,mushroom
Triples: impulse,zealot,flesh golem,quaker
The other easier build of this set. A decent set of damage towers but no aoe slows available. Both well and blacksmith are available. Flame is the only source of slowing available. Quaker and zealot as the strong triples. In duals, kindle, hydro, mushroom are the towers to use. Single-targetters would be stronger here without aoe slows.