I beat the last level when I wasn't even level 80.
Just use trap. Red and orange gems to boost your mana, red and purple to reduce armor to 0 (3 orange and 3 purple level 10 are enough, and one big gem (level 15 for me) to do the damages.
Upgrade your mana gain and your trap skills (I'm level 79 so I also have all the other usefull stuff maxed). Then put a lot of trap with orange gem near the entrance, and upgrade your mana pool.
I just went to monsters level 61 in endurance mode with that. (20 trap with level 6 orange, 6 tower with 4 level 9 and 2 level 8, and 48 mana pool upgrade).
I do that for every level, it works perfectly ! :D
Dud1 told me this for the save from armorgames:
Darthouille: Try to go to C:\Documents and Settings\Åsmund\Programdata\Macromedia\Flash Player\#SharedObjects and then into the directory you have there and then look into cache.armorgames.com directory, i guess you should find save(number).sol inside there somewhere. Move it to chat.kongregate.com folder. Hope this kinda makes sense, dont wanna explain it with a thousand words :D
Level 78 : When you destroy the seal, all monster on the map are killed. So just call as many waves as possible before destroying it. And when they are about to reach your tower, drop you last gembomb.
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