I would take you up on the offer but I'm playing coop with my wife and I don't think she wants to cheese the game just for the achievement.
Thanks for offering though! Any idea how long this takes playing normally?
I could give you an improved low level item or something. then even strong enemies wont matter. Best way to level is survival. And Maps on insane of course. Best way to start is as squire. Put all you skill points in tower str, hp and attack frequency.
squire=
good hp, good towers, good anti air (harpoons)
bad speed
mage has good towers as well but has elemental towers and some enemies are immune to fire and electricity. If you build just fire towers enemies break through etc. (Some level 70 player still forget that
) The weakest tower is elemental neutral I think.
Monk is a nice support class with his slow and weak auras.
For mid and late play always have a tower built and a damage build. Improve your tower stats on your weapon too for your tower built and change to your damage bult after the building phase. My squire destroyes everything on insane levels, I sometimes have to berserk with my squire to kill ogres with high hp. I tried nightmare difficulty but its nearly impossible with a squire. The ogres deal too much damage to get close. Attacking from afar is better. Item sets give you huge bonuses.