Tip
Use [Q]-[W] on his (Q) to get rid of them quickly. Although you can try to lose in after he is hit with [Q], his (E) can stop you while dealing damage. Try to close in only when clear of his (Q).
Tahm Kench vs Heimerdinger

Use [Q]-[W] on his (Q) to get rid of them quickly. Although you can try to lose in after he is hit with [Q], his (E) can stop you while dealing damage. Try to close in only when clear of his (Q).