Gru must get past the spiked floor and rotary valve to exit the room. He has 6 minions at his disposal.

Gru orders a 5-minion tower and uses his wind gun to push them over, forming a bridge beneath the red button.

Gru hits the red button 3 times.

The rotary valve's opening now faces Gru.

Gru orders the remaining minion to stand in front of him. He freezes the minion in a block of ice with the freeze ray, then pushes the minion off the ledge with the wind gun.

The iced minion falls onto the blue button, activating the blue platforms.

Gru recalls the iced minion and orders him to stand beneath the minion bridge. He uses the wind gun to inflate the minion, causing it to float upwards.

Gru stands in the rotary valve.

Gru recalls the minions in the minion bridge. The floating minion floats up to the ceiling toward the red button.

The red button is pushed and the rotary valve rotates, dropping Gru in front of the exit.