DEAP-3600 is a multi-tonne experiment at SNOLAB, an underground laboratory located at a depth of 2 km in Sudbury, Canada. The detector is filled with approximately 3.3 tonnes of liquid argon contained in a 1.7 m diameter ultra-low-background acrylic vessel operating at temperature of ~87 K and is designed for the direct detection of Weakly Interacting Massive Particles (WIMPs), one of the most promising dark matter candidates. DEAP-3600 set world-leading constraints on TeV-scale mass dark matter searches with liquid argon as scattering target, as well as on Planck-scale mass dark matter. The detector relies on the pulseshape discrimination method, which allows the rejection of electronic recoil backgrounds with better than $10^{-10}$ leakage probability at 50% nuclear recoil acceptance above 18 keVee. In this contribution, the latest results from DEAP-3600 will be presented, including a description of the background model as well as dark matter search results.