Click on the (or Local Files ) tab on the left menu. Click the Verify integrity of game files... button.
The steam-api.dll file is a critical dynamic link library file. The game uses this file to connect with the Steam client. It manages features like achievements, cloud saves, and digital rights management (DRM). call of juarez gunslinger steam-api.dll
Given these severe risks, you should rely strictly on the official methods (restoring from quarantine, verifying through Steam, or reinstalling). Your computer's security and your Steam account's health are far more valuable than the time saved by a potentially dangerous "quick fix." Click on the (or Local Files ) tab on the left menu