Hmm. I think I was wrong to start Fidel on HtH specialization but ammo was scarce in the beginning. Pistols would fit him better, with lower AP cost, and there's an ability which lowers that cost more, so one shot would be 2AP instead of 3.
Now that we start to meet enemies with firearms, he has to run up to them and get shot meanwhile he doing that. Tho keep him in cover for a while and baiting the enemy to come close helps out a bit.