Here is the full list of all 26 Steamroll achievements.
Find the pieces of the broken driller.
Get Valuska's driller back to you.
Rescue Garcia from her Scarabeus.
Make Garcia unlock your path.
Unlock Garcia's Scarabeus.
Get all 3 awards in Level 9
Get all 3 awards in Level 7
Break the rocks in the corridor.
Get all 3 awards in Level 5
Destroy the main elevator.
Get all 3 awards in Level 1
Get all 3 awards in Level 2
Get all 3 awards in Level 3
Get all 3 awards in Level 4
Get all 3 awards in Level 6
Get all 3 awards in Level 8
Get all 3 awards in Level 10
Get all 3 awards in Level 11
Get all 3 awards in Level 12
Get all 3 awards in Level 13
Get all 3 awards in Level 14
Get all 3 awards in Level 15
Get all 3 awards in Level 16
Get all 3 awards in Level 17
Get all 3 awards in Level 18