Very confusing mechanics. Are you also "collecting" the adjacent tiles when you click the middle one? or are they just changing?
Since no numbers are shown outside of the incoming damage, it's unclear how effective the collected tiles were.
How much are we taking that is unavoidable?
Is it added on top of the incoming damage?
How much armor damage are we doing?
Also, consider reducing a lot, the time between new text lines. It gets annoying very quickly at how slow it is.