I find that a common re-occurence in this game is that gems are taken and the enemy who took it will die either in the cave or outside it nearby. A way to resolve this aggravating event, i think that when the gem teleports after you acquire that perk, it counts as not touched.
ths game takes some strategy and tactics to do, i like it. i don't see how it is boring, it seems quite entertaining, actually. heavy tank II and war plane II = ftw.