|Base Helium cost||1|
|Cost increase||1.3x multiplicative|
Method of acquisition
|Each level is a 5% additive increase to Trimp health|
"Pay your Trimps to knock you around a little bit. By learning to not be a wuss, your Trimps will be less wussy as well. Adds 5% health permanently to your Trimps."
Each level is a 5% additive increase to Trimp health
Relation to other perks Edit
Because Toughness effectively adds health, it has synergy with other health perks.
A guide on how to efficiently level those perks in relation to each other can be found in this section.