Conan knew his own skills, and he knew that he would be no help in a fight. What he did have was a a SCA and plenty of experience moving quickly around buildings in ruin.

So he heads out on his skateboard, using every skill he has to navigate the broken landscape.

Falling City
Conan throws all of his weight to the side of his board, causing it to screech to a halt just before going over the edge of a missing bridge. On the far side he can see a small group of civilians.

A quick glance around shows that there was no easy way to get to them. Conan considers the situation, then picks up his board and backtracks far enough to give himself enough space. He steps back onto the board, and holds down both the brake and the engine until he judges enough power has built up. Then he is speeding off, using the broken bridge as a ramp to leap across the missing space.

Hindrance or Help
The monsters were a challenge. Conan couldn't fight them. But he could avoid them. Barreling forward towards a monster on his skateboard, he throws his weight to the side at the last minute and goes sliding underneath its attack.