Minecraft wiki entry for Defeating_a_pillager_outpost, associated text: Similar to the minimalist method above, it is possible to build straight up with dirt at a reasonable safe distance with a water bucket in hand. Then build a platform above the outpost and place water directly above the center of the tower. If possible, also collect a bucket of lava (or just another bucket of water) for combat before dropping in, and keep dirt on hand for escape. Swim down to the roof of the outpost, break through the roof and drop either the water or lava down the stairs and collect your loot. Leisurely climb back through the ceiling with dirt and swim back up to the platform above. If you used lava, watch as the world burns. This is an admittedly labor-intensive method of defeating an outpost, and you don't get any pillager loot from killing pillagers, but it is a mostly foolproof strategy, and can also be done early game and requires only a bucket, and two to three stacks of dirt/cobblestone. This method is easier if there are hills or tall trees nearby. Stone tools and food may be useful but are not required.