The first day is about establishing your resource loop and building your first "cannon battery".
Do not merge Anvil Scraps until you have a board full of them. The Anvil drops higher-tier shields the longer you wait. Save up 10 scraps, merge to Lv3 instantly. sibling rivalry necromerger guide repack
: Build as many Level 1 Cannons as possible rather than merging them into higher levels. Multiple lower-level cannons provide more total damage per hour. The first day is about establishing your resource
Most players lose because they waste energy on (dealing 500 damage to a shield that only has 10 HP left). Save up 10 scraps, merge to Lv3 instantly
When you fire a Cannon, immediately tap the Brother again during the recoil animation. If timed right (0.2 sec window), the cannon fires twice for the energy cost of one. This is difficult but possible on a lag-free device. Use it on Lv6 cannons only.