Offensive Line can be difficult to get using the regular Sprint Tackle, as it will not always vanquish plants that are hit. It is recommended to use the Ultra Tackle to get this achievement, as it does much more damage, however, has a slower recharge. Whichever ability you are using, you should try to charge into groups of plants. Sunflowers are a good target due to their low health. Try to avoid Chompers because of their high health and their abilities which can stop and slow you down such as Goop and Spikeweed. It is possible to get extremely lucky by getting credit for a Multi-Tackle and a Multi-vanquish at the same time. Chompers can be defeated if you throw your imp and also use your tackle. Obviously easier if you use the Ultra Tackle.