 As revenge, Goldstein worked his way into Del Ray's government, intentionally sabotaging the dam and levee construction to engineer the disaster, so that he may release Echidna in the chaos to kill the victims still trapped in the city; Ivan and David were two of the top scientists assigned to the project, but David developed a guilty conscience and wanted to release evidence of the Mayor's plan to the authorities, prompting Goldstein to have him killed.Goldstein orders Ivan to stand down, and Ivan may either obey, abandoning Sierra, or refuse and attempt to destroy Echidna.If Ivan resolves to destroy Echidna, Goldstein shoots him, and Ivan, mortall wounded, uses the last of his strength to crawl through the floodwaters and connect the electrical cables, destroying Echidna before being executed by an enraged Goldstein, thus saving the city from Echidna.