Genome Guardian - Don't Scorch yourself!

Scorch has a very unique gimmick, as heat rises it gets faster firerate but if you hit max heat you destroy yourself. This leads to a high risk gameplay, how far do you push to benfit from the faster firerate without killing yourself on accident.
Thermometer + Extinguisher + Fridge makes heat management a breeze and reduces the risk of killing myself because I'm a dumbass. Pacemaker is here too because this is Classic and we cannot buy any healing between waves.
Of course I could always just use Defibrilator to save myself if I don't pay attention to heat but that woudl be boring.
Fitting with the theme of burning yourself, nukes and molotovs with additional burn damage thrown in for good measure. If I have to suffer, so shall my enemies.