Abilities

Abilities are a ScrapTD feature unlocked at Level 5. You can select up to 3 different abilities at the same time (in the past you could use the same ability in more than a slot) in combat against your opponents, but your opponent must be Level 5 or higher too in order to be able to use them.

Abilities
There are currently 9 abilities available, all automatically unlocked when getting to Level 5.

Strategical use
It's said the best abilities are Scrap, Faster Barrels, Freeze, Defense Boost and Double Barrels. However, the others are good too.

Changes over time
After the initial release, a lot got changed. Scrap originally gave 15 seconds and double barrels wasn't working, for example. The darkness ability became longer and longer, which made it actually worse, in 1.0 it got buffed a lot by changing the effect.