expression, suru verb (irregular)
fill with holes; riddle with holes
Used literally for making many holes in something, or figuratively for riddling with bullets, criticism, etc. Often implies a thorough or destructive result.
壁を穴だらけにしてしまった。
I ended up riddling the wall with holes.
敵の車を銃で穴だらけにした。
They riddled the enemy's car with bullets.
穴だらけ is an adjective meaning 'full of holes'; 穴だらけにする is the verb phrase 'to make full of holes'.
Compound of 穴 (hole) + だらけ (full of) + にする (to make). The phrase follows a common pattern for expressing 'to make something full of something'.