On the level you can get sasquatch, to protect him when he's low, change his rally point often, when you change rally points, they become untargtable. Also, you can put his rally point at the top left cave entrance.
I don't know if this is a glitch but, when i turned lvl 25, it popped up "YOU HAVE REACHED LVL 25 YOUR PLANT HAS BEEN UPGRADED" three times. And then i saw a bench
theres a secret chaingun hidden beneath the walls of the training room. before you learn to jump on the ladder and climg it blast away the wall on the left and get the chaingun
1) Line launchers everywhere on ground 2) Place saws around but make they have tight spots in between 3) Place 3 shooters above every saw 4) OPTIONAL : Put lasers on wall 5) Acheive 10k hits in 30 ~ 60 seconds
 "Kingdom Rush"){kind=icon}
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 "Icy Gifts"){kind=icon}
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 "Doodle God"){kind=icon}
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