The Only Way Through (Act 4-1) is the first chapter of the fourth Act in Bulletstorm's campaign.
After a close call at the Dam, the team washes up in a business district.
This is the first chapter in which the player is introduced to Nom Parasites and Venus Maneaters in the game world.
It is also the first time Grayson can take on a Bouncer-wielding Miniboss, obtain the weapon for his own use, and start accruing any related Skillshots.