Fix-it Felix Jr. Hints
Watch out for obstickles: window shutters that are opened outwards will prevent you moving over the ledge from that side, flower pots will stop you jumping up onto the ledge above, or jumping back down below.
Always plan your next move to be away from the direction that Ralph is currently moving towards, and rapidly hit the repair button at each broken window.
Pies on the window ledges will make you invincible for a short amount of time.
Sweet Climber Hints
The candies on each level are used to boost your score.
The sparkling wine gums will give you a rapid height boost.
Hero's Duties Hints
As with most twin-stick shooters circleing each arena while firing ahead and to the sides whenever the coast is clear should help you go through it safely. However it won't help when objects start to block your path.
In later levels certain areas of the ground become toxic and you'll keep losing health even if you did not get hit. Go as fast as you can over them.