O(kay, so he JUST found out his Earth skill at lvl 3 can get the boar stuck...
Did he not notice his water skill is also at lvl 3? I mean, if you're afraid to use the knife, use something like a waterbubble to drown it?? But no, as almost every other isekai guy, he tries fire first. Because fire is cool and not dangerous at all...
At least the boar was funny, being unimpressed with his failure magic as well.