For gen 2 All you need is a stone box, I use a 4x5 stone trap with the short sides being blocked by gateways, just have the queen chase you into a space biome and put the trap on the platform just outside the space biome entrance, have a roof on the trap tho, but it only needs to be as high as the gateways, the reaper will chase you inside and then you trap it, I used the striders chest cannon so I didn’t use any charge lighting cause of the chest cannon does enough damage with the reaper’s resistance, after the reaper is glowing red( low enough health) break a gate, lead it into the tube where there is gravity, it’ll do its thing then leave, for more tips hit up my Ig :spamz_from_tyty, or my snap war_hog3