Helpful Tips if your stuck

This guide is actually an accumulation of tips that would have helped me when i was playing the game and hopefully help you as they are rarely any walkthroughs or guides on this game.

Missing Green Apples?

If you are missing Green Apples (50 for achievement):
-the Heaven level have hidden apples
-the ones you would miss are mostly the ones hiding above out of screen, move you mouse up to move your view up and use Greed to hook it

Don't know how to unlock the bottom three upgrades?

The bottom three next to bobble head are cheats that only unlock after you complete the game.

Buying upgrades and cheats aren't permanent

You don't have to be scared of spending your green apples,
just click on the upgrade / cheat again to deselect and get your apples back

Cheats interfere with Achievements

Can't kill the Big Angel in the second last mission in "Heaven" level?

You might be stuck on this mission, its actually different to any other mission.
-After you reach the big angel, you run your @ss off back towards where you came from.
-At some point you will find some ladders going down and the big angel will fly off, leaving you to solve the last puzzle of that mission.

Last Boss Fight Trouble

Spoiler if you are not up to the last boss.
The way to take down his shield is to deflect the white projectile with Pride.
Gluttony was the best one to damage him and heal after eating the minions that spawn

Suggestions

If anyone has any questions on the tips i mention (more detailed) or tips i should add, feel free to comment and i will try to update.