Very easy if you just stick to quick attacks... max upgrade to miners and swords then you just have the advantage of numbers (though a giant in the final levels is a big help).
I like the song at the end :)
Badges would be nice
got all 4 endings in a single game.... had to see the credits scroll every time. took me 359 days (almost a year). there should be a badge for getting all achievements.
relatively easy game... has some bugs that might get you stuck in the game (pressing Go to early after a fight) and I can't get the 4 hires badge no matter how many times I go to the achievements page.
can't finish the game... too dependent on specific hardware and software. there doesn't seem to be any solution to lvl 23 on Ubuntu, also for lvl 25 I just found the password in the forums.
you need a better level designer... you can't assume what players will do in your game. they can do anything they want. if possible to jump to another platform than you intended, players will jump to it (often skipping half or more of your level). if players can just jump over a ramp without needing to build momentum, they will just jump over that ramp. etc, etc.
I won the game, and I have no idea what the abilities are... You have to make it more clear, because with the random keys it's really too difficult to figure out which ability does what... I knew the speed boost, accidentally used a stun once, and more than once killed myself and still don't know what icon that was.
entertaining, but most levels are very easy. and some give you gold for more than 1 shot, even when 1 shot is easy to obtain.
p.s. super-bombs are much fun on the first levels :)
once you manage to buy your first upgrades, the game becomes easy fast.
and it also becomes very random at high speeds and altitudes; no way to tell if you're going to hit spikes or not.
once you get all upgrades, there's no real motivation to keep playing.
 "VVVVVV Demo"){kind=icon}
 "Home Sheep Home"){kind=icon}
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 "Frontier"){kind=icon}
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 "Oil Night"){kind=icon}
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 "Ball and Chain"){kind=icon}
 "Zyl"){kind=icon}
 "Microbe Kombat"){kind=icon}
 "Crush the Castle"){kind=icon}
 "Crush the Castle Players Pack"){kind=icon}
 "Toss the Turtle"){kind=icon}