In prim+, use 80 steel pillars (5x5x5) leave an entrance (you put 3 pillars on ground 1 hight) and 5 giant bear traps. The bear traps leave you anough time to place the remaning pillars to trap the giga. With 2 person we used about 1700 tranq with 13 crossbow 100% xD. Long tame but we got a lvl 290.good luck and have fun.

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