During the raid on the Kelishki Automotives weapons test facility, the Insurrection made off with several heavy weapon prototype Lisa tanks. These would later become known as the "Spider" or "Jumping Spider" due to the appearance created by the slapped on armor plating. The Spider featured a Soviet style pan handle turret with two remotely operated 20mm cannons for anti personnel defense. Unlike the other models of PT-26, the Spider 152 was a very early prototype hindered by an underperforming engine, manual reloaded main guns, a poorly insulated electronics suite, and a slow turret traverse. Despit these apparent drawbacks, the Insurrection continued to operate about 500 of these vehicles until the end of the Human-Covenant War.
Trim to traverse turret and 20mm cannons (ag 1 to activate), vtol to elevate and depress.

For the casemate td: https://www.simpleplanes.com/a/2w54C9/PT-26-250-Lisa-Casemate