Here is a pretty important tip for beating the game and getting your impossible badge:
- Obstacles come in only certain combinations.
- Each combination consists of up to 3 different elements/obstacles.
- The combinations are different from level to level.
- Each combination can only occur once per life per level.
- Each combination will appear once per level.
Some examples:
Level 3: Front archer volley + Front archer volley
Level 3: Short jump + short jump + farmer
Level 5: Duelist + Duelist
Level 5: Duelist + back archer volley
Level 5: back archer volley + duelist
Level 5: Medium duck + duelist + soldier (if memory serves me right)
*Not sure if the chasing horseman is part of any combination.
Personally I didn't write down a list, but as soon as I noticed the pattern, I started taking mental notes on the combinations, which made it possible to have an idea of what would come. Very useful in sprints.
+ to keep alive!
 "Hippolyta"){kind=icon}
 "Globetrotter XL"){kind=icon}
 "Battle Beavers"){kind=icon}
 "Legends of Kong"){kind=icon}
 "Zilch"){kind=icon}
 "Shore Siege!"){kind=icon}
 "Effing Worms"){kind=icon}
 "Multitask 2"){kind=icon}