tips for how to beat the two gnome king wave

starting from wave 35, there will be 2 gnome kings as well as 2 big guy(either plant or zombie depands on your side). the first thing to do is to save your time stability, at least half the bar, because you are gonna spend a lot of them in exchange for you safty. there will be 2 gnome kings, you need to focus on one and only one of them. if another is trying to destablize, just gently shoot them once or twice, they will leave the circle soon and head toward you. so at first two gnome kings spawn, no reinforcement, you need to keep them close to each other so it is easier to control. if they spawn in the opposite ends, you have to lure them in good position first. then drop the health of the first one using your normal shot(not special weapon) to 2/3, then clear the reinforcement. you can use the special weapon to clear the big gnome. after that drop the health to 1/3 and the big guy will come along with the reinforcement. clear the reinforcement first then the big guy while keeping an eye on the second gnome king, do not let its health below 2/3 or another reinforcement will come, after the big guy down immediately use the special weapon to vanquish the gnome king. repeat the above to the second one, only this time is a lot easier and won't cost any time atability. so feel free to use up all in the first half.
other tips: do not use the special weapon against the big ones, avoid aim shot as much as possible, keep a distanst to the big ones and they will not shoot you, do not be afraid to cancel the special wanpon if you are surrounded